JP2000292164A - Laser measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the laser measuring instrument which can measure the distance to an object, the size of the object, etc., as accurate numerals by changing the irradiation directions of laser lights emitted by two light sources arranged laterally at an interval and is excellently used and manufactured at low cost. SOLUTION: A 1st light source A which is changeable in the irradiation direction of a laser light Aa along a Y axis and a 2nd light source B which is changeable in the irradiation direction of a laser light Bb along an X axis are provided horizontally and right laterally at an interval S of reference length and the irradiation angles θ, θ1, and θ3 of both the light sources A and B are detected by angle sensors and calculated through operation based upon the detection; and the distance L to the object V, the size of the object V, etc., are calculated on the basis of the irradiation angles θ, θ1, and θ3 and reference length S according to a specific arithmetic program, so that their arithmetic values can be displayed out as accurate numerals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention changes the irradiation direction of laser light emitted from two light sources provided at a distance in the horizontal direction in the corresponding X-axis and Y-axis directions, and A laser measuring machine that detects the angle of the irradiation direction of laser light by matching the center on the surface of the measurement object, and measures the distance to the object, dimensions of the object, etc. based on this detected value etc. .

[0002]

2. Description of the Related Art Known techniques in a range finder or a measuring device using a laser beam include, for example, a technology described in Japanese Utility Model Laid-Open No. 7-29488 for a laser range finder, and a technology disclosed in Japanese Patent Application Laid-Open No. 5-288549 for a measuring device. There is the technology described.

The laser range finder described in Japanese Utility Model Laid-Open Publication No. Hei 7-29488 projects a laser beam emitted from a laser emitting unit onto a target unit, and reflects the reflected light via a color filter and a lens. And measures the distance to the object by measuring the phase difference.

A room size measuring device described in Japanese Patent Application Laid-Open No. 5-288549 includes a reflector having a large number of prisms for reflecting an incident light beam in an incident direction, a base, and a rotatable base on the base. A mounted rotary table, a rotary encoder mounted on the rotary table, for generating a number of pulses proportional to the rotation angle of the rotary table with respect to the base, and counting pulses output from the rotary encoder. A counter to
A laser range finder mounted on a turntable to measure the distance to the reflector, and when the measured distance to the reflector indicates a minimum value, the counter value and the output of the laser range finder are angled. Storage means for storing data and distance data.

[0005]

However, the laser distance meter described in Japanese Utility Model Application Laid-Open No. Hei 7-29488 can easily measure, but when the object has a shape and material that is difficult to reflect, the surface of the object is difficult to reflect. When there is unevenness or inclination, there is a problem that reflected light suitable for measurement cannot be obtained.

[0006] In addition, the use of a filter with a hole is intended to reduce the dispersion of measured values caused by employing a structure in which reflected light is detected by a light-receiving sensor through a lens. As shown in (1), even when a filter with holes is provided, it cannot be said that the dispersion of the measured values is sufficiently eliminated depending on the degree of the amount of reflected light.

On the other hand, the room size measuring device described in Japanese Patent Application Laid-Open No. 5-288549 reflects a laser beam with a reflector placed at a position to be measured. Although no problem occurs, there is an annoyance that the reflector has to be placed to the measurement position. Furthermore, this is not only a matter of whether or not to place a reflector, but also, for example, measuring the distance from the device to the wall by placing the reflector in front of the wall itself, at the position of the measurement target This means that a shift has occurred, and accurate measurement cannot be performed unless measurement is performed by incorporating the shift in advance.

The inventor of the present invention has diligently studied to solve such a problem, and as a result, completed the present invention and completed a prototype.

However, the object of the present invention is to
The irradiation directions of the laser beams emitted from the two light sources provided with a space therebetween in the horizontal direction are changed in the corresponding X-axis and Y-axis directions so that the centers of both the laser beams coincide with each other on the measurement object surface. The operation detects the angle of the irradiation direction of the laser beam, calculates the distance to the target, the dimensions of the target, etc. based on the detected value, etc., and outputs and displays the calculated value as an accurate numerical value. It is an object of the present invention to provide a laser measuring device which can be manufactured, is easy to use, and can be manufactured at low cost.

[0010]

According to a first aspect of the present invention, there is provided a laser measuring apparatus according to the first aspect of the present invention, in which a laser beam irradiation direction is movable in a Y-axis direction. A light source and a second light source whose irradiation direction of the laser light is movable in the X-axis direction are provided at intervals of a reference length in the horizontal and horizontal directions, and a change in the irradiation direction of both light sources is performed by operating means. When the irradiation direction of the second light source is changed and the centers of the laser lights irradiated from both light sources are matched on the target surface at the measurement position, the angle of change of the irradiation direction of the second light source becomes an angle sensor. This change angle is temporarily stored, and based on the change angle and the stored reference length, the centers of both laser beams from the first and second light sources are combined according to a predetermined calculation program. The distance to the matching point is calculated These calculated values are temporarily stored, characterized in that at least the center of both the laser light from the first light source is configured so that the distance to the point that match is output and displayed from among these calculated values.

The distance that can be measured by the laser measuring device of the present configuration can be determined by the distance between the first and second light sources, which can change the irradiation direction in the Y-axis direction, of the two first and second light sources. This is the distance in front of the point where the center of the laser light emitted from the light source coincides with the point on the object surface.

The distance between the first light source and the second light source required for the calculation of the distance measurement is set in advance as a reference length, and the irradiation direction of the laser light emitted from the first light source is determined by the distance. Is set at right angles to the direction.

As a specific calculation formula, the distance (reference length) from the first light source to the second light source is S, the angle of the irradiation direction of the second light source with respect to the reference length S direction is θ, Assuming that the distance to the object surface is L, this distance L is L =
It is calculated by S × Tanθ. This formula is stored in the ROM as a calculation program.

This formula is a formula obtained from a trigonometric function when the apparatus and the laser beam are viewed in plan (as viewed from above).

The shape of the laser light emitted from the first and second light sources and projected onto the object is a dot shape or a cross shape. By adopting such a shape, the center of the laser light emitted from both light sources can be obtained. Can be matched on the object plane at the measurement position.

As described above, the present apparatus can measure the distance from the first light source to the object located in front of the first light source. However, the width and height of the object can be measured in the X-axis and Y-axis directions. Can not be measured.

What can cope with such a case is the laser measuring machine of the second configuration of the present invention, and this laser measuring machine, after calculating the distance of the first configuration described above, uses the first light source or the first light source. By changing the irradiation direction of any one of the second light sources to a corresponding desired direction, and aligning the center of the laser light emitted from the light source with an arbitrary designated point,
The angle of change of the irradiation direction of the changed light source is detected by an angle sensor, and the change angle is temporarily stored, and the change angle and the center of both laser beams from the first or second light source that have already been calculated are combined. On the basis of the distance to the point, the distance from the point at which the centers of both laser beams matched to the designated point is calculated according to a predetermined calculation program,
The calculated value is temporarily stored, and the calculated value is output and displayed.

The measurement performed by the laser measuring device of the second configuration is as follows: (1) Measurement in the Z-axis direction, that is, an object located in front of the first light source and obtained by the same method as in the first configuration. (2) Measurement in the X-axis direction, that is, from the point where the centers of the two laser beams coincided, the center of the laser beam when the irradiation direction of the first light source was changed in the X-axis direction was The irradiation direction of the second light source is changed in the Y-axis direction from the distance W to the located point, for example, the lateral width of the object, (3) the measurement in the Y-axis direction, that is, from the point where the centers of both laser beams coincide. There are three types of distances H to the point where the center of the laser beam is located when the laser beam is caused to occur, for example, the height of the object.

The measurements (2) and (3) are both performed after the measurement (1).

In the measurement of (2), the distance R from the second light source to the object and the change angle θ2 of the irradiation direction of the second light source obtained by the measurement of (1) are given. Since the incident angle θ3 of the second light source with respect to is (90 ° −θ1), W = (R × Sinθ2) / Sin (90 ° −θ1)
Is calculated by the following equation.
It is stored in the OM.

The measurement of (3) is based on the change angle θ1 of the irradiation direction of the first light source, the distance L1 from the first light source to the object surface calculated by the calculation of (1), and the calculation of (1). Since the calculated distance L2 from the second light source to the object surface is given, the formula H = L1 × of the trigonometric function for finding the other side of the right triangle when the included angle is given with the two sides. Tan
is calculated by θ, and this formula is stored in the ROM as a calculation program.

The operation value obtained in this way is displayed on a display means such as a 7-segment LED of a plurality of digits or an LCD or a liquid crystal display, and is stored in a RAM because it is necessary for the subsequent operation. .

Although both the first and second light sources can change the irradiation direction in the corresponding directions, even a small error in the change width of the irradiation angle measures, for example, the height of a large structure at a short distance. In this case, a large measurement error appears. For this reason, in the third configuration of the present invention, when the change angles of the irradiation directions of the first and second light sources exceed a predetermined angle range, this is detected, and based on this detection signal, a signal sound or synthesized voice is generated. Alternatively, at least one of the lamps is configured to be activated so that the operator is informed of this and measurement without error is performed. Although not necessarily limited, a specific predetermined angle range is ± 22.5 degrees for both the first light source and the second light source.

As described above, the measured values of the laser measuring machines of the respective configurations described above are displayed on the display means, but it is inconvenient to write down the numerical values and the measurement locations each time the measurement is performed. is there. Therefore, the fourth aspect of the present invention
In this configuration, in addition to any one of the above-mentioned configurations, an interface for externally connecting a keyboard and a printer to the apparatus is provided in order to enhance the transmission.

On the other hand, in the fifth configuration of the present invention, in order to further enhance the usability, the personal computer and the portable terminal are replaced with the fourth configuration or in addition to the fourth configuration. , For example, RS232C.

In each of the configurations described above, the shape of the laser light emitted from the first and second light sources reflected on the object is basically a dot shape or a cross shape. They thought that using this as a mark-out line would be even more convenient. For this reason, in the sixth configuration of the present invention, in addition to any one of the above configurations, the laser beams emitted from the first and second light sources are both formed in a cross shape that extends long in the X-axis and Y-axis directions. The intersection is located at the center of the laser beam.

The laser measuring apparatus of the present invention thus configured is housed in an outer case so that laser light can be emitted from the first and second light sources, and the main body is constituted by a base or a base. Supported on a tripod. In measurement, it is basically used by placing it on the floor, on a table, or the like. However, it is expected that there is a slight difference in height between the apparatus and the object. For this reason, in the seventh configuration of the present invention, in addition to any one of the above-described configurations, the main body including the first and second light sources is provided so that the main body can be adjusted to a desired height. It was supported on a base or a tripod so that it could move up and down. The lifting and lowering is performed by driving a motor or operating a handle.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The purpose and structure of the present invention have been described above, and specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a method of measuring a distance using the laser measuring machine of the present invention, and FIG. 2 is a view of the shape of a laser beam projected on an object viewed from the front. In each figure, A is a first light source that can change the irradiation direction of the laser light along the Y-axis direction, and B is a second light source that can change the irradiation direction of the laser light along the X-axis direction. The images of the laser light emitted by both light sources A and B are both long in the X-axis and Y-axis directions, and their intersection is at the center of the laser light.

As shown in FIG. 1, the first light source B is provided at a position provided with a reference length S in the lateral direction of the first light source A of the laser measuring machine (this machine) 1. The reference length S is a preset length, for example, 30 cm.

The first light source A has an irradiation direction of a reference length S
And is supported so that the irradiation direction can be moved along the Y-axis direction. On the other hand, the second light source B is supported so as to be able to move its irradiation direction along the X-axis direction.
Is changed so that the centers of both laser beams Aa and Ba coincide with each other.

A method for measuring the distance L from the first light source A to the object V and its calculation will be described with reference to FIGS.

First, the laser beam Aa is directed toward the object V with the first light source A facing the front, and the second light source B is irradiated with the laser beam Ba from the second light source B.
Is changed to the X-axis direction so that the center of the laser beam Ba emitted from the second light source B matches the center of the laser beam Aa emitted from the first light source A. This is the only human operation.

The calculation necessary for measuring the distance L1 is performed according to a calculation program of a microcomputer built in the main unit 1.

The formula is that the interval (reference length) from the first light source A to the second light source B is S, the irradiation angle of the second light source B with respect to the reference length S direction is θ, If the distance to V is L, this distance L is L = S × Tan θ
Is calculated by This formula is stored in the ROM as an operation program.

Numerical value (distance L) calculated by this operation
Are stored in the RAM and simultaneously displayed on the display unit of the main unit 1. The irradiation angles of the first light source A and the second light source B are also displayed on the display unit of the main unit 1.

The angle θ1 at which the laser beam Aa and the laser beam Ba match is also 180 ° − (90 ° + θ).
And the calculated numerical value is also stored in the RAM. This ends all the processing.

Next, a method of measuring the width W of the object V and its calculation will be described with reference to FIGS.

FIG. 3 is a plan view showing a method of measuring a distance by using the laser measuring machine of the present invention, and FIG. 4 is a diagram showing the shape of a laser beam projected on an object viewed from the front. is there.

First, in exactly the same manner as the above-described method for measuring the distance, the coincidence point P between the two laser beams Aa and Ba is aligned with the end of the object V, and the position is designated. 2 Move the light source B in the X-axis direction to
To the other end P1 of the object V in the width W direction. This is the only human operation.

The calculation necessary for measuring the width W is performed according to a calculation program of a microcomputer built in the main unit 1.

Assuming that the angle of change of the irradiation direction of the second light source B is θ2 and the incident angle of the laser beam Ba emitted from the second light source B to the object V at the coincidence point P is θ3, = (90 ° -θ1), θ3 is calculated. Subsequently, W = (R × Sin θ2) / Sin
The width W of the object V is calculated by the formula (90 ° −θ1).

These two formulas are stored in the ROM as a calculation program, and the numerical values after the calculation are stored in the RAM, and are simultaneously displayed on the display unit of the machine 1. This completes all processing.

Next, a method of measuring the height H of the object V and its calculation will be described with reference to FIGS.

FIG. 5 is a side view diagrammatically showing a method for measuring the height using the laser measuring apparatus of the present invention, and FIG. 6 is a diagram showing the shape of a laser beam projected on an object viewed from the front. It is.

First, the coincidence point P between the two laser beams Aa and Ba is adjusted to the lower end P2 of the object V in exactly the same manner as the method for measuring the distance described above. Subsequently, the first light source Aa is moved in the A-axis direction, and the laser light Ba is moved to the width W of the object V.
To the other end P1 in the direction. This is the only human operation.

The calculation required for measuring the height H is performed according to a calculation program of a microcomputer built in the main unit 1.

In the formula, the change angle θ5 of the irradiation direction of the first light source A and the distance L from the first light source A to the object V are detected and calculated, and the laser light Bb irradiated from the second light source B is calculated. Since the incident angle of the target object V in the Y-axis direction is 90 °, the height H is the length of the other side given by the two corners and the included side in the right-angled triangle of H = L1 × Tanθ. Is calculated according to the following formula: This formula is stored in the ROM as a calculation program.
M and is displayed on the display unit of the main unit 1 at the same time.
This completes all processing.

FIG. 7 is a plan view showing the main body case 2 of the laser measuring machine 1 having such a function. As shown in the figure, a laser module 3 as a first light source is supported near one end in the main body case 2 so that the irradiation direction can be freely changed in the Y-axis direction. Further, a predetermined reference length (for example, 30 c
Near the other end in the main body case 2 provided with m), a laser module 4 as a second light source is supported so that the irradiation direction can be freely changed in the Y-axis direction. The front portions of the main body case 2 in front of the two laser modules 3 and 4 are each opened at a predetermined angle.

As shown in FIG. 7, in the main body case 2,
A galvano motor 5 that changes the irradiation direction of the laser module 3 that is the first light source, a galvano motor 6 that moves the irradiation direction of the laser module 4 that is the second light source in the X-axis direction, and both galvano motors 5 and 6 Drive boards 7a and 7b, an angle sensor composed of potentiometers 8 and 9 for detecting a galvano motor angle, a stabilizing board 10 for stabilizing voltage, an A / D board 11, and a memory for storing the above-mentioned arithmetic program ROM, RAM for storing the calculated values, and CP as the arithmetic processor
And a substrate 12 on which various electronic components such as U are mounted.

A photograph 13 for controlling the drive of the galvano motor 5 is provided on the outer surface of the body case 2 near the laser module 3 as the first light source.

On the upper surface of the main body case 2, the galvano motor 6 is driven to change the irradiation direction of the second light source B, and the laser beam (Bb) is moved to the matching point to specify the matching point. A shooting 15 for changing the irradiation direction of the second light source B from the point of coincidence to the X-axis direction (width direction), and a connector 16 for connecting a ten-key signal cable connector. , A display unit 17 for displaying a numerical value (or a symbol, and a calculated value, such as distance, width, and height), a lamp (or LED) 18 for displaying that a key operation has been started, An LED 19 indicating that the unit has been designated, a start lamp 20 indicating that the calculation has started, and a power switch 21 are provided.Instead of the connector 16, a ten-key or full key is provided. The keyboard may be directly mounted on the upper surface of the main body case 2. The function keys described in the description of Fig. 9 described later may be a ten-key or a full keyboard, or a dedicated function key. The key may be directly mounted on the upper surface of the main body case 2.

A connector 25 for connecting a signal cable connector of a printer (49) and a connector 26 for connecting a signal cable connector of a terminal such as a personal computer are provided on the rear surface of the main body case 2. Household 1
One end of an electric wire 27 for receiving a 00V power supply is extended.

FIG. 8 is a block diagram showing a control circuit of the laser measuring machine.
U) 40 includes a ROM 41 in which a plurality of calculation programs described above are stored, a RAM 42 in which measured values and calculation values are stored, and a numerical calculation LSI 43 that performs calculation of a numerical value given along with the calculation program. An interface 44 to which the function keys 34 are connected;
An interface 45 to which the display unit 17 is connected, an interface 46 to which an angle sensor composed of the potentiometers 8 and 9 is connected, and an interface 47 to which the galvanometer motors 5 and 6 are connected are connected.

Further, it is more convenient to provide an optional interface 48 for externally connecting the printer 49. Further, although not shown, instead of the interface 48 or together with the interface 48,
As an option, providing an interface for connecting to an electronic device such as a personal computer or a portable terminal is further enhanced.

FIG. 9 is a flow chart showing the operation procedure of the keys required for the measurement. In accordance with each step shown in FIG.
The operation procedure will be described.

(1) Press the start button (step 5)
0). (2) Press the function key to select height measurement (step 51). At this time, the preparation OK lamp is turned on (step 52). (3) (after matching both laser beams on the object), press the function key to select the forward distance measurement (necessary before height measurement) (step 5).
3). The distance calculation is performed by the descent. (After moving the laser module of the first light source in the Y-axis direction to adjust the center of the laser beam to the position of the height of the object) (4) Identify the position to be measured by operating the ten keys A numerical value is designated (step 54). At this time, the designated numerical value is displayed on the display unit (step 55). (5) Press the dimension key to select an output unit (for example, cm) (step 56). At this time, a dimension lamp indicating a display unit (for example, cm) is turned on (step 57). (6) Press the start key to start the calculation (step 58). At this time, the start lamp is turned on (step 59), and the calculation is performed (step 6).
0). Subsequently, the θ angle in the height direction (θ2 angle in FIG. 5)
Is determined whether or not exceeds a preset upper and lower limit angle (step 61). If the θ angle does not exceed the upper and lower limits, the L lamp is turned off (step 62). This completes the calculation (step 6).
4) The calculated value is output to the display unit. In this determination, when the θ angle exceeds the upper and lower limits, the overflow / LE
Following the lighting of D (step 63), start
The lamp is turned off (step 65), and the measurement ends halfway (step 64).

As shown in FIGS. 10 and 11, the laser measuring apparatus 1 having the above-described configuration and function is provided with a rack 30 at the lower part of the main body case 2 facing downward.
The rack 30 is supported on an upper part of a tripod 31 located under the main body case 2 so as to be able to move up and down.
The rack 30 is moved up and down through a pinion gear, by driving a motor, or by manually rotating a handle.

[0059]

According to the laser measuring apparatus of the present invention described above, the irradiation directions of the laser beams emitted from the two light sources provided with a space therebetween in the horizontal direction are adjusted in the corresponding X-axis and Y-axis directions. The angle of the irradiation direction of the laser light is detected by the operation of changing the center of both laser lights on the measurement object surface by changing the distance, and the distance to the object, the object Was calculated, and the calculated value could be output and displayed as an accurate numerical value.

Further, when a change angle of the irradiation direction of the first and second light sources exceeds a predetermined angle range, this is detected, and based on this detection signal, at least one of a signal sound, a synthesized voice, and a lamp. By configuring one of them to operate, high measurement accuracy could be maintained.

Further, since the apparatus is provided with an interface for externally connecting a keyboard and a printer, various control signals necessary for measurement and display of measured values (calculated values) can be given from the keyboard. The values could be printed out on the recording paper.

Further, since the apparatus is provided with an interface for externally connecting a personal computer and a portable terminal, various control signals necessary for measurement and display of measured values can be given from a keyboard. (Computed value) data can be input to a personal computer to facilitate subsequent data processing, and data management can be facilitated.

The laser beams emitted from the first and second light sources are both formed in a cross shape elongated in the X-axis and Y-axis directions, and the intersection is located at the center of the laser beam. Thus, the laser light projected on the object became easier to see, and the center of the laser light became easier to understand. As a result, the operation required for the measurement is facilitated, and the measurement can be performed with high accuracy. In addition, it has become possible to perform blackout using these laser beams.

In addition, since the main body of the apparatus is supported on the base or the tripod so as to be able to move up and down, the main body can be adjusted to the height of the object required for measurement, and the measurement can be performed. is there.

[Brief description of the drawings]

FIG. 1 is a plan view showing a method of measuring a distance by using a laser measuring device of the present invention in a diagram.

FIG. 2 is a front view of a shape of a laser beam projected on an object.

FIG. 3 is a plan view showing a method of measuring a distance by using the laser measuring device of the present invention in a diagram.

FIG. 4 is a front view of the shape of a laser beam projected on an object.

FIG. 5 is a side view diagrammatically showing a method for measuring height using the laser measuring device of the present invention.

FIG. 6 is a front view of the shape of a laser beam projected on an object.

FIG. 7 is a plan view showing a main body case of the laser measuring machine.

FIG. 8 is a block diagram showing a control circuit of the laser measuring machine.

FIG. 9 is a flowchart showing a key operation procedure required for measurement.

FIG. 10 is a front view of a laser beam.

FIG. 11 is a side view of a laser beam.

[Explanation of symbols]

 A first light source Aa laser beam B second optical path Bb laser beam H (measuring) height L (measuring) length P Matching point (of both laser beams) S reference length V object W (measuring ) Width 1 Laser measuring device 2 Body case 3 Laser module 4 Laser module 17 Display

Claims (7)

[Claims] A first light source whose laser light irradiation direction is movable in the Y-axis direction and a second light source whose laser light irradiation direction is freely movable in the X-axis direction have a reference length in a horizontal horizontal direction. The irradiation direction of both light sources is changed by operating means, the irradiation direction of the second light source is changed, and the center of the laser light emitted from both light sources is located at the measurement position. When matched on the object surface, the angle of change of the irradiation direction of the second light source is detected by the angle sensor, and this change angle is temporarily stored, based on this change angle and the stored reference length, According to a predetermined calculation program, the distance from the first and second light sources to the point where the centers of both laser beams coincide with each other is calculated, and these calculated values are temporarily stored. Center of both laser beams A laser measuring device characterized in that a distance to a point where is matched is output and displayed. 2. After calculating the distance from the first light source to the point where the centers of both laser beams coincide, X direction corresponding to the irradiation direction of one of the first light source and the second light source.
By changing the axis or the Y-axis direction to a desired direction and aligning the center of the laser light emitted from the light source with an arbitrary designated point, the changed angle of the changed irradiation direction of the light source is detected by an angle sensor, This change angle is temporarily stored, and based on this change angle and the distance from the already calculated first or second light source to the point at which the centers of both laser beams coincide with each other,
According to a predetermined calculation program, the distance from the point where the centers of both laser beams coincide with each other to the specified point is calculated, and the calculated value is temporarily stored, and the calculated value is output and displayed. The laser measuring device according to claim 1. 3. When a change angle of the irradiation direction of the first and second light sources exceeds a predetermined angle range, the change is detected, and based on the detection signal, at least one of a signal sound, a synthesized voice, and a lamp. 2. The method according to claim 1, wherein one of said plurality is operated.
Or the laser measuring device according to 2. 4. The laser measuring machine according to claim 1, further comprising an interface for externally connecting a keyboard and a printer. 5. The laser measuring device according to claim 1, further comprising an interface for externally connecting a personal computer and a portable terminal. 6. A laser beam emitted from the first and second light sources is formed in a cross shape extending in the X-axis and Y-axis directions, and the intersection is located at the center of the laser beam. Item 6. The laser measuring device according to any one of Items 1 to 5. 7. The laser measuring machine according to claim 1, wherein the main body provided with the first and second light sources is supported on a base or a tripod so as to be able to move up and down.