JPH07270161A - Surveying apparatus for setting - Google Patents

Abstract

PURPOSE:To enable quick setting of a target by a method wherein a fast distance measurement is executed when a value obtained by comparing a distance measured value and a set distance value is larger than a specified value and a switching is made over to a precision distance measuring mode when the value is smaller than the specified value. CONSTITUTION:When judging that a measured distance value is off a set distance value exceeding a specified value, a control section 14 makes a drive circuit 11 turn ON a light emitting element 9 at a modulation frequency. In this case, a distance measuring section 13 is set to a fast distance measuring mode and a worker on the side of a target is allowed to approach a set point in a short time viewing modulation light with eyes or through a display device. On the other hand, when judging that the distance measured value is within the set distance value by the specified value, the control section 14 switches the distance measuring mode from the fast distance measurement to the precision distance measurement with respect to the distance measuring section 13. The worker makes a fine adjustment of a prism on the side of the target checking the modulation light emitted from the light emitting element 9 thereby enabling the setting of the target to a measuring point quickly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveying instrument for surveying, and more particularly to a surveying instrument for surveying which allows a target side to know a set point in the direction of sight line.

[0002]

2. Description of the Related Art As a conventional surveying instrument for surveying, data of a drawing designed by a building design CAD is recorded on a recording medium such as an IC card, and the recording medium is connected to a surveying instrument installed at a construction site and piled. Measure the angle indicating the direction to be measured and the distance (set distance value) to the position (set point) to be measured, calculated from the data in the drawing and the coordinate position of the surveying instrument in order to indicate the striking position. Some are displayed on the display of the machine.

The operator of the surveying instrument adjusts the direction of the telescope of the surveying instrument in accordance with the instruction of the display, and the operator who is waiting around the position of the stakeout uses a transceiver or the like to move the position of the stakeout in the sight line direction. Instruct.

On the other hand, as a conventional surveying and surveying instrument capable of instructing an operator of a surveying instrument to a pile driver without using a transceiver or the like, a collimator having at least two reflecting surfaces is provided. A reflecting member that splits the optical path of the collimator lens into at least two at a substantially focal position of the lens, and a reflecting member disposed in the optical path branched by the reflecting member and substantially on the optical axis of the collimator lens. A semiconductor light emitting element that emits a light flux, and the light emitting cycles of these semiconductor light emitting elements are driven by a plurality of light emitting cycles, and the light emitting cycle based on the difference between the distance to a point to be set and the distance measured by the distance measuring unit is Some have a drive circuit that selects from a plurality of light emission cycles (Japanese Utility Model Laid-Open No. 4-087415).

With this surveying instrument, the operator can confirm the deviation in the direction of the optical axis by observing the blinking of the emitted light while moving the prism in the vicinity of the pile driving position. It is possible to perform the surveying work only by the operator who is waiting at the pile driving position without looking up to the operator.

[0006]

However, in the above-described method in which the operator searches for a point to be set while moving the prism as the target in the vicinity of the pile driving position, the distance measuring time takes 2 to 4 seconds. When setting a point in a narrow area such as 1 mm or 2 mm, the point that should be set may pass while moving the prism, and it takes time to set the point, resulting in poor workability. .

The present invention has been made in view of the above circumstances, and an object thereof is to provide a surveying and surveying device capable of quickly setting a point in the direction of the sight line.

[0008]

In order to solve the above-mentioned problems, the surveying and surveying device according to the invention of claim 1 is provided in the main body, and measures the distance from the main body to a target installed at the measuring point. In the surveying and surveying device, which is provided with the main body and which projects the optical signal toward the target, the range-finding means measures the distance measured by the range-finding means itself. The distance value is compared with a preset set distance value, and when the compared value is larger than a first predetermined value set in advance, the distance measuring means is set to a high-speed distance measurement mode with a short distance measuring time. When the set value and the compared value are smaller than the first predetermined value, the distance measuring means has a distance measuring mode switching means for setting the distance measuring means to a precision distance measuring mode with high distance measuring accuracy. Is compared with the first predetermined value in advance. When the distance measurement value is larger than the predetermined second predetermined value and the distance measurement value is smaller than the set distance value, the first optical signal that changes based on the compared value is output, and the comparison is performed. A second optical signal different from the first optical signal that changes based on the compared value when the value is larger than the second predetermined value and the distance measurement value is larger than the set distance value. And a third optical signal different from the first and second optical signals when the compared value is smaller than the second predetermined value.

Further, in the surveying and surveying instrument of the invention as set forth in claim 2, the control means is such that the compared value is in advance from the second predetermined value within a range in which the first optical signal is output. Also outputs a fourth optical signal when larger than a third predetermined value that is set to a large value, and differs from the fourth optical signal when the compared value is smaller than the third predetermined value. A fifth optical signal is output, and a sixth optical signal is output when the compared value is larger than the third predetermined value within a range in which the second optical signal is output, and the comparison is performed. And a light signal switching means for outputting a seventh light signal different from the sixth light signal when the calculated value is smaller than the third predetermined value.

[0010]

As described above, when the compared value between the distance measurement value and the set distance value is larger than the first predetermined value, high-speed distance measurement is executed and when the compared value is smaller than the first predetermined value. Since the distance measurement mode is switched to the precision distance measurement, the target can be quickly installed at the measurement point.

[0011]

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

FIG. 2 is a perspective view of a surveying and surveying instrument according to an embodiment of the present invention. On the columns 2 and 3 of the surveying instrument body 1, a telescope 4 having a function of measuring a distance and confirming a measuring position (setting point) is supported rotatably around a horizontal axis. .

In the housing 4a of the telescope 4, a collimation axis L of the telescope 4 is provided to an operator on the target side (eg prism).
Of the telescope 4 for indicating the vertical position of the collimation axis L of the telescope 4 to the operator on the target side.
A light projecting device 7 for indicating the position in the collimation axis direction is provided.

FIG. 3 is a sectional view of the light projecting device 7.

A collimator lens 8 is fixed to the housing 4a of the telescope 4, and a light emitting element 9 is arranged near the focal position on the optical axis l thereof. The light emitting element 9 is driven by the drive circuit 11 on the substrate 10.

FIG. 1 is a block diagram of a surveying surveying instrument.

The surveying instrument for surveying is compared with the operation unit 12 for inputting a set distance value indicating the distance to be surveyed, high-speed ranging (short range-finding accuracy) and short high-range ranging. Distance measuring unit (distance measuring means) 13 capable of performing precise distance measurement (high distance measuring accuracy), a set distance value from the operation unit 12 and a distance measurement value from the distance measuring unit 13 ( A control unit (control unit, distance measurement mode switching unit) 14 that compares a high-speed distance measurement value and a precise distance measurement value and outputs a control signal, and drives the light emitting element 9 based on the control signal from the control unit 14. And a drive circuit 11 that operates.

Next, the operation of the surveying and surveying device will be described with reference to FIG. FIG. 4 is a diagram showing the modulation frequency of the light emitting element 9.

When the set distance value is input by the operation unit 12 and the measuring and setting operation is started, the distance measuring unit 13 executes high speed distance measuring and outputs the measured distance value to the control unit 14. The control unit 14 compares the set distance value from the operation unit 12 with the distance measurement value from the distance measurement unit 13, and outputs a control signal according to the comparison result.

That is, when the control unit 14 determines that the distance measurement value deviates from the set distance value e by more than a predetermined value c (first and third predetermined values), the result shown in FIG. As shown, when the target is close to the reference point for the set distance value, the target uses the control signal for setting the modulation frequency of the light emitting element 9 to f4 (fourth optical signal) as the reference for the set distance value. When it is farther than the point, a control signal for setting the modulation frequency of the light emitting element 9 to f6 (sixth optical signal) is output to the drive circuit 11. The drive circuit 11 outputs a drive signal to the light emitting element 9 based on the control signal to turn on the light emitting element 9 at the modulation frequency f4 or f6.

In this case, since the distance measuring unit 13 is set to the high speed distance measuring mode and the accuracy is rough but the distance measuring time is short, the target worker visually checks the modulated light emitted from the light emitting element 9. Alternatively, it is possible to approach the set point in a short time while looking at the display device (not shown).

On the other hand, when the control unit 14 determines from the comparison result of the set distance value and the distance measurement value that the distance measurement value is within the predetermined value c with respect to the set distance value e, the control unit 14 measures the distance. When the target is close to the reference point with respect to the set distance value as shown in FIG. 4B, the switching signal for switching the distance measurement mode from the high speed distance measurement to the precise distance measurement is output to the distance unit 13. Is the modulation frequency of the light emitting element from the modulation frequency f4 to the modulation frequency f5 (fifth optical signal). When the target is farther than the reference point with respect to the set distance value, the modulation frequency of the light emitting element is changed from the modulation frequency f6 to The drive circuit 11 sends control signals for changing to the modulation frequency f7 (seventh optical signal).
Output to. The drive circuit 11 outputs a drive signal to the light emitting element 9 based on the control signal, and the light emitting element 9 is modulated at the modulation frequency f5.
Alternatively, the light is emitted at f7.

In this case, the target-side operator can recognize that the distance measuring mode of the distance measuring unit 13 has changed to the precision distance measuring by checking the modulated light emitted from the light emitting element 9, and the set distance value is set. On the other hand, it is possible to know whether the position is closer to or farther from the position (reference point) of the surveying surveying instrument, and fine adjustment of the target prism is performed.

It should be noted that it takes a long time to switch between the high-speed distance measuring mode and the precise distance measuring mode of the distance measuring unit 13, and since the distance measuring operation cannot be performed during that time, the target side operator is informed of the disabled state. The light emitting element 9 emits a modulation frequency f8 different from the modulation frequencies f4 and f6 in the distance measuring state.

Further, a predetermined value d smaller than the predetermined value c in advance.
When the (second predetermined value) is determined and the control unit 14 determines from the comparison result of the set distance value and the measured distance value that the measured distance value is within the predetermined value d with respect to the set distance value e, FIG. As shown in b), a control signal for changing the modulation frequency of the light emitting element 9 from the modulation frequency f5 or f7 to the modulation frequency f3 (third optical signal) is output to the drive circuit 11, and the light emitting element 9 is modulated at the modulation frequency f3. To emit light.

In this case, the target side operator can recognize that the point setting in the optical axis direction has been successful by confirming the modulated light emitted from the light emitting element 9.

As described above, according to the surveying and surveying apparatus of this embodiment, the high-speed ranging mode is selected in which the ranging time is short until the ranging value falls within the predetermined value c of the set distance value e. The target side operator can quickly approach the set point while watching the modulated light of the modulation frequency f4 or f6 emitted from the light emitting element 9, and the distance measurement value falls within the predetermined value c of the set distance value e. In this case, the distance measurement mode is switched from the high-speed distance measurement to the precise distance measurement, and the modulation frequency of the light emitting element 9 is changed from the modulation frequency f4 or f6 to the modulation frequency f5 or f7. It is possible to confirm that the distance measuring mode has been switched to the precise distance measuring mode simply by looking at the modulated light emitted from the beam No. 9, and it is possible to know the deviation from the point to be set, so it is faster and higher than the conventional example. With accuracy It is possible to carry out the cement setting, to improve the workability.

Further, in this embodiment, the distance measuring section 13 is switched from high-speed distance measurement to precise distance measurement, and the modulation frequency f4 of the light emitting element 9 is changed.
Alternatively, the switching from f6 to the modulation frequency f5 or f7 was performed at the same predetermined value c, but the predetermined value (first predetermined value) for switching the distance measurement mode of the distance measuring unit 13 and the modulation frequency of the light emitting element 9 were used. The present invention can also be implemented when the predetermined value for switching (third predetermined value) is different from each other.

Further, in the present embodiment, the switching of the modulation frequency of the light emitting element 9 is carried out at two places of the predetermined value c and the predetermined value d, but it is also possible to carry out the switching with more plural predetermined values. As shown in FIG. 4C, a modulation frequency f1 (first optical signal) that continuously changes the modulation frequency in accordance with the comparison value between the distance measurement value and the set distance value e until it falls within the predetermined value d. ) Or f2 (second optical signal) can also be used.

Further, in this embodiment, the predetermined value c and the predetermined value d
Although the numerical value of was constant, it is possible to change the numerical value according to the progress of the work, or to change the numerical value when the predetermined value has hysteresis and when it goes out of the predetermined value. It is possible.

In this embodiment, the modulation frequency of the light emitting element 9 is switched at a predetermined value, but it is also possible to switch the issuing job at a predetermined value by using light emitting elements of different colors.

[0032]

As described above, according to the surveying / surveying device of the present invention, when the measured distance value and the set distance value are larger than the first predetermined value, the high-speed distance measurement is executed. When the compared value is smaller than the first predetermined value, the distance measurement mode is switched to the precision distance measurement, so that the target can be quickly installed at the measurement point and the workability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a surveying and surveying apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a surveying surveying instrument according to an embodiment of the present invention.

FIG. 3 is a sectional view of a light projecting device.

FIG. 4 is a diagram showing a modulation frequency of a light emitting element.

[Explanation of symbols]

 7 Light Emitting Device 8 Collimator Lens 9 Light Emitting Element 11 Drive Circuit 12 Operation Section 13 Distance Measuring Section 14 Control Section

Claims (2)

[Claims] 1. A distance measuring means provided on the main body, for measuring a distance from the main body to a target installed at a measuring point, and a light emitting device provided on the main body for emitting an optical signal toward the target. In the surveying and surveying device including means, the distance measuring means compares a distance measuring value measured by the distance measuring means itself with a preset distance value, and the compared value is predetermined. When the distance is larger than the first predetermined value, the distance measuring means is set to a high-speed distance measuring mode in which the distance measuring time is short, and when the compared value is smaller than the first predetermined value, the distance measuring means is set. Has a distance measurement mode switching means for setting the distance measurement mode to a high precision distance measurement mode, and the light projection means has a second predetermined value in which the compared value is set to be smaller than the first predetermined value in advance. Is greater than the value, and the distance measurement value is the set distance value. Is smaller than the predetermined distance, the first optical signal that changes based on the compared value is output, the compared value is larger than the second predetermined value, and the distance measurement value is larger than the set distance value. Also outputs a second optical signal that is different from the first optical signal that changes based on the compared value, and when the compared value is smaller than the second predetermined value, A surveying and surveying instrument comprising a control means for outputting a third optical signal different from the first and second optical signals. 2. The control means, when the compared value is larger than a third predetermined value which is set to be larger than the second predetermined value in advance within a range where the first optical signal is output. A fourth optical signal is output, and when the compared value is smaller than the third predetermined value,
A fifth optical signal different from the fourth optical signal is output, and a sixth value is output when the compared value is larger than the third predetermined value within a range in which the second optical signal is output. An optical signal switching means for outputting an optical signal and outputting a seventh optical signal different from the sixth optical signal when the compared value is smaller than the third predetermined value is provided. The surveying instrument for surveying according to claim 1.