JPH07198384A - Surveying system between steel tower support points - Google Patents

Abstract

PURPOSE:To enhance the measuring accuracy of the surveying system by a method wherein a measuring instrument is changed over and selected and distances and angles of elevation up to a first steel tower support point and a second steel tower support point are measured from a measuring point. CONSTITUTION:By a changeover signal A from a computer 10, a changeover device 21 selects a measuring instrument 23A. The measuring instrument 23A which has started a measurement by an ON signal radiates a near infrared laser or the like to a reflecting mirror on a steel tower, reflected light is incident on the measuring instrument, and a distance and an angle of elevation up to a steel tower support point on one side are measured from a measuring point. Measured data on them is input to the computer 10, and the computer outputs an OFF signal to the measuring instrument 23A so as to finish the measurement. A steel tower support point on the other side is measured in the same manner. Then, a measuring instrument 23A is selected 21 by a changeover signal B, and the measuring instrument 23B performs a measurement in the same manner as the measuring instrument 23A. The computer 10 to which measured data has been input performs a prescribed data computation on the basis of the measured data by both measuring instruments. When a computed measuring difference is at an allowable value or lower, its mean value is used as a measured result. When the measuring difference exceeds the allowable value, the measurement is performed again until a result at the allowable value or lower is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel tower inter-support point surveying system for surveying electric wire data between the support points of a steel tower that supports electric wires. The present invention relates to a tower tower inter-support point survey system that is eliminated to improve the reliability of measurement.

[0002]

2. Description of the Related Art When an electric wire is installed on a steel tower by a prefabricated overhead wire construction method, the distance between the supporting points of the electric wire on the steel tower is obtained by surveying in advance in order to obtain the length data of the electric wire manufactured in the factory.

As shown in FIG. 4, the electric wire supporting portion of the steel tower is composed of a mounting plate 31 having a mounting hole 32 provided at an end of the arm 30 and a predetermined plate as shown in FIG. The long prefabricated electric wire 33 is attached.
The suspension part that suspends the prefabricated electric wire 33 has two insulators 35.
And a fixing bracket 37 for fixing the tip of the insulator 35 to each other, and a fixing bracket 37 fixed to the mounting plate 31 of the steel tower.
It is fixed by tightening bolts.

The measurement between the support points of the steel tower is performed using the mounting holes 32 of the mounting plate 31 as the measuring points. In this survey, in order to calculate the catenary of the electric wire 33, as shown in FIG. 6, as the distance between the supporting points, that is, the length of the electric wire that is installed on the steel tower, the supporting points 41A and 41B in the steel towers 40A and 40B are calculated. It is necessary to obtain the horizontal distance S between them and the height difference H.

The horizontal distance S between the supporting points 41A and 41B
The height difference H is generally obtained by, for example, a trigonometric method in which a reflecting mirror is attached near the measurement point, and a measuring instrument such as a light-wave distance-measuring finder is installed on the ground for surveying. That is, on the ground, the measurer looks at the telescope of the measuring instrument from there and horizontally and vertically rotates the telescope with the reflecting mirror of the tower as the target, then activates the measuring instrument and emits a near infrared laser etc. from the measuring instrument. By injecting the reflected light from the reflecting mirror, the distance from the measurement point to the support points 41A and 41B and the elevation angle are measured.

In order to ensure accuracy, this measurement is performed twice by changing the measurement position, and if the error exceeds the allowable range (generally, horizontal distance of about 20 mm, height difference of about 50 mm), re-measurement is performed. If the error is less than the allowable value, the average value is used as the measurement result. The measured value is read out by the measurer, and the writer who listens to it writes it in the field book while reading it, and then inputs the measured value entered in this field book into the calculator, and the horizontal line between the support points 41A and 41B. The distance S and the height difference H are calculated. Here, the horizontal distance S and the height difference H between the support points 41A and 41B are measured at the measurement point 42 in FIG. 7, and the distances to the support points 41A and 41B are l ₁ , l
₂ and the elevation angle is A ₁ and A ₂ , it can be calculated by the following formula.

[Equation 1] Here, s ₁ = l ₁ cosA ₁ and s ₂ = l ₂ cosA ₂ H = h ₂ −h ₁ where h ₁ = l ₁ sinA ₁ and h ₂ = l ₂ sinA ₂

[0007]

However, according to the conventional method for measuring the distance between the support points of the steel tower, even if the measurer does the collimation operation of the telescope of the measuring instrument, the switch operation for activating the measuring instrument after this is done. The vibration of the telescope may cause the direction of the collimation axis of the telescope to deviate from the direction of the collimation axis that was initially adjusted, which causes an inconvenience that an accurate measurement result cannot be obtained. The measurement accuracy can be improved in proportion to the number of times of measurement, but the measurement accuracy cannot be sufficiently increased because the switch operation must be performed a plurality of times for a plurality of measurements. In addition, since the survey data is obtained by reading out the measured values by the measurer, filling in based on the interview of the writer, and further inputting into the calculator, human error during the surveying work, such as mistakes in listening and typographical errors. However, there is a problem in that the reliability of measurement is low.

Therefore, it is an object of the present invention to provide a steel tower inter-support point surveying system capable of enhancing the measurement accuracy and eliminating the occurrence of errors and mistakes by the operator to enhance the reliability in the measurement.

[0009]

In view of the above problems, the present invention improves the measurement accuracy and eliminates the occurrence of human error and mistakes to improve the reliability of the measurement. Via at least two or more measuring devices for respectively measuring the distance and elevation angle to the support point of the second steel tower, a switching device for switching and selecting one measuring device from at least two or more measuring devices, and a switching device. It is connected to at least two or more measuring instruments, controls the switching selection operation of the switching device and the measuring operation of the measuring instruments switched and selected by this switching device, and supports from the measurement result obtained from at least two or more measuring instruments. It is intended to provide a tower tower inter-point measuring system including an arithmetic and control unit for calculating data for electric wires between points.

The arithmetic and control unit controls the switching unit to switch and select one measuring unit from at least two measuring units, and outputs an ON signal to the selected measuring unit to perform an ON operation. The measurement result is input from the selected measuring device, and when the measurement is completed, an OFF signal is output to the selected measuring device to perform an OFF operation.

Further, the arithmetic and control unit controls the switching unit to sequentially switch and select one of the at least two measuring units, and perform a plurality of measurements on at least two or more measuring units. In addition, when the variation value of the measurement result is larger than the predetermined value, the measurement is controlled to be performed again.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A steel tower inter-support point surveying system according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an overall view of a steel tower inter-support point survey system according to an embodiment of the present invention. This steel tower inter-support point survey system is a measuring instrument 23A, 23B for obtaining the distance from the measurement point to each support point and the elevation angle by light wave measurement.
And a switching device 21 for selecting one of the measuring devices 23A and 23B and connecting it to a computer described later, and a switching device 21.
And the measuring device 2 which is selected by the switching device 21.
The measuring device 23A, 23B is provided with a computer 10 that controls the measuring operation of 3A or 23B and calculates the distance between steel tower supporting points from the measurement result obtained from the measuring device 23A, 23B.
The switching device 21 and the computer 10 are connected to each other via the communication cables 22A and 22B, and the communication cable 20.

The measuring instruments 23A and 23B include ten-key units 25A and 25B for manual operation and displays 26A and 2B.
It has 6B.

As shown in FIG. 2, the computer 10 has a memory means 24 having a program memory 11 for measurement and calculation and an external memory 12, a keyboard 13 for inputting command information and predetermined data, and measured values. And a display 14 for displaying calculated values, a printer 15 for printing measured values, calculated values, etc., an I / O interface 16 for inputting / outputting signals to / from the control means, and a ROM 17 storing a predetermined standard program. A CPU 18 for performing a predetermined calculation based on the program of the program memory 11 and the program of the ROM 17; and a RAM 19 for temporarily storing the calculation result and the like. The measuring operation of the switching-selected measuring device 23A or 23B is controlled and the measuring device 23A, 23B is controlled. And calculates the electric wire data between support points of steel towers from the measurement results obtained from.

The surveying procedure by the inter-supporting point survey system of the steel tower of the present invention will be described below with reference to the flowchart of FIG.

First, in preparation for measurement, measuring instruments 23A and 23B (hereinafter, measuring instruments A and
(Referred to as B), and as shown in FIG. 1, the measuring instruments A and B and the switching device 21 are connected to communication cables 22A and 22.
At B, the switching device 21 and the computer 10 are connected by the communication cable 20, respectively.

Next, while looking through the telescope of the measuring instrument A, the collimating operation of the telescope is performed aiming at the reflecting mirror of the tower, and then a switching command for selecting the measuring instrument A is input from the keyboard 13 of the computer 10. The switching signal A is output from the computer 10, and the switching device 21 is caused to perform the switching operation for selecting the measuring instrument A.

Next, the keyboard 1 of the computer 10
By inputting a measurement command from the computer 3,
An ON signal for operating the measuring instrument A is output from 0 to cause the measuring instrument A to perform the measurement operation. At this time, since the operation of the measuring instrument A is performed by remote control of the keyboard 13 of the computer 10, the collimation axis of the telescope does not shift during the operation.

When the measuring instrument A is turned on and then a measurement command is input, the measurement operation is started. That is, the near-infrared laser or the like is emitted to the reflecting mirror of the steel tower, and the reflected light from the reflecting mirror is incident to measure the distance from the measurement point to the supporting point of one of the steel towers and the elevation angle. Then, the measuring instrument A outputs this measurement data to the computer 10. Although there are various measuring methods, it is possible to perform measurement by emitting two waves having wavelengths λ ₁ and λ ₂ and measuring the phase difference between the reflected waves. Further, in order to eliminate the measurement error due to the weather, the weather data (temperature, atmospheric pressure, weather, etc.) is input in advance from the keyboard 13 of the computer 10, so that the actually measured data is corrected.

When the computer 10 receives the measurement data from the measuring instrument A, the computer 10 outputs an OFF signal to the measuring instrument A and causes the measuring instrument A to end the measurement operation. When the measurement of one of the steel towers is completed in this way, the measurement of the support points of the other steel tower is then similarly performed using the measuring device A.

Next, the supporting points of both steel towers are measured using the measuring instrument B. In this measurement, the telescope of the measuring instrument B is collimated as in the case of the measuring instrument A, and then a switching command for selecting the measuring instrument B is input from the keyboard 13 of the computer 10, so that the switching signal from the computer 10 is input. B is output, and the switching device 21 is caused to perform a switching operation for selecting the measuring instrument A.

Next, the keyboard 1 of the computer 10
By inputting a measurement command from the computer 3,
The ON signal for operating the measuring instrument B is output from 0, and the measuring instrument B is caused to perform the measurement operation.

When the measuring instrument B inputs an ON signal, the measuring operation is started. That is, the near-infrared laser or the like is emitted to the reflecting mirror of the steel tower, and the reflected light from the reflecting mirror is incident to measure the distance from the measurement point to the supporting point of one of the steel towers and the elevation angle. Then, the measuring instrument B outputs this measurement data to the computer 10.

When the computer 10 receives the measurement data from the measuring instrument B, the computer 10 outputs an OFF signal to the measuring instrument B and causes the measuring instrument B to end the measurement operation. When the measurement of one of the steel towers is completed in this manner, the computer 10 then similarly uses the measuring device B to measure the support points of the other steel tower.

When the measurement data of the support points of the steel tower are respectively received from the measuring instruments A and B in this way, predetermined data calculation is performed to calculate the measurement difference (measurement value A-measurement value B) and The result is displayed on the display 14, and if the result is less than or equal to the allowable value, the average value is used as the measurement result. If the value exceeds the allowable value, a plurality of results are obtained until the result is less than or equal to the allowable value. Re-measure once.
The measurement results may be printed on a field notebook using the printer 15, or an external memory 1 such as a floppy disk.
It may be stored in 3.

When the measurement result is obtained, for example, the measurer inputs a calculation command from the keyboard 13 to calculate the horizontal distance between the support points and the height difference. The calculation result is displayed on the display 14 and stored in the external memory 13 so that it can be printed out as required.

As described above, according to the steel tower inter-support point surveying system of the present invention, since the operation of the measuring instrument is performed by the remote operation of the keyboard 13 of the computer 10, the collimation axis of the telescope is displaced by the vibration of the switch operation during the operation. As a result, the measurement accuracy can be improved. In addition, recording, calculation, and determination of remeasurement are integrated, and since posting to the field notebook is automated, it is possible to eliminate human errors and mistakes during surveying work, and improve measurement reliability. it can. In the measurement procedure described above, the switching command of the switching device 21 and the measuring instruments 23A and 23B are used.
Although the measurement command and the measurement value calculation command are separately performed, the series of operations may be performed by one command signal. Further, the present invention is not limited to surveying between the support points of the steel tower, and may be applied to any surveying procedure of operating the measuring instrument after collimating the telescope of the measuring instrument. it can.

[0029]

As described above, according to the surveying system between steel tower supporting points of the present invention, the first, second and third measuring points
At least two measuring devices for respectively measuring the distance to the support point of the steel tower and the elevation angle, a switching device for switching and selecting one measuring device from at least two measuring devices, and at least two via the switching device. Connected to more than one measuring device, controlling the switching selection operation of the switching device and the measuring operation of the measuring device switched and selected by this switching device,
Since it is equipped with an arithmetic and control unit that calculates data for electric wires between supporting points from the measurement results obtained from at least two or more measuring instruments, the measurement accuracy is improved and an artificial error occurs.
Errors can be eliminated and measurement reliability can be increased.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing the circuit structure of FIG.

FIG. 3 is a flowchart showing a measurement procedure according to an embodiment.

FIG. 4 is an explanatory view showing an electric wire support portion of a steel tower.

FIG. 5 is an explanatory view showing a mounting structure of a prefabricated electric wire and an electric wire supporting portion.

FIG. 6 is an explanatory view showing a space between steel tower supporting points.

FIG. 7 is an explanatory view showing a surveying method between steel tower supporting points.

[Explanation of symbols]

10 Computer 11 Program Memory 12 External Memory 13 Keyboard 14 Display 15 Printer 16 I / O Interface 17 RO
M 18 CPU 19 RA
M 20 communication cable 21 switching device 22A, 22B communication cable 23A, 23
B measuring device 24 memory means 25A, 25
B Numerical keypad section 26A, 26B Display 30 Bracket 31 Mounting plate 32 Mounting hole 33 Prefabricated electric wire 34 Electric wire fixing portion 35 Insulator 36 Connecting metal fitting 38 Fixing metal fitting 40A, 40
B Steel tower 41A, 41B Support point 42 Measurement point

Claims (3)

[Claims] 1. In a survey system between steel tower support points, which obtains electric wire data between the electric wire support points in the first and second steel towers by surveying and calculation, At least two or more measuring devices that respectively measure the distance to the support point and the elevation angle, a switching device that switches and selects one measuring device from the at least two or more measuring devices, and at least the switching device via the switching device. From the measurement results obtained from the at least two or more measuring devices, which are connected to two or more measuring devices and control the switching selecting operation of the switching device and the measuring operation of the measuring devices switched and selected by the switching device. A tower tower inter-survey point survey system comprising an arithmetic and control unit for calculating the electric wire data between the support points. 2. The arithmetic and control unit controls the switching unit to switch and select one of the at least two measuring instruments, and outputs an ON signal to the selected measuring instrument to perform an ON operation. The steel tower support according to claim 1, wherein the steel tower support is configured so that the measurement result is input from the selected measuring instrument, and an off signal is output to the selected measuring instrument to perform an off operation when the measurement is completed. Point-to-point survey system. 3. The arithmetic and control unit controls the switching unit to sequentially switch and select one of the at least two or more measuring instruments, and to select the at least two or more measuring instruments a plurality of times. The tower tower inter-point survey system according to claim 1, wherein the measurement is performed and the measurement is performed again when the variation value of the measurement result is larger than a predetermined value.