JP4412803B2 - Position measurement setting device and position measurement setting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a position measurement setting device for performing position measurement and position setting in a construction site, indoor interior work, and the like.
[0002]
[Prior art]
The most common three-dimensional position measuring device is a GPS (Global Positioning System).
[0003]
GPS receives radio waves emitted from artificial satellites and determines the positions of measurement points. In addition, there is a type in which a target object tracking function is provided in a total station which is an automatic surveying instrument, and a prism is provided in the target object to measure the position of the target object.
[0004]
In the measurement method using the total station, tracking light is emitted from the total station, the tracking light is reflected by the prism, and the total station receives the reflected light to detect a target object, and the target is detected by a range finder. It measures the distance to the object.
[0005]
[Problems to be solved by the invention]
Measurement and position setting using the above GPS 3D measuring device requires radio waves from artificial satellites, so radio waves necessary for surveying cannot be received indoors or in places with radio interference, etc., so use is limited However, there is a problem that it cannot be used.
[0006]
Further, in a total station equipped with a recent tracking function, in order to detect a target object, it is necessary to scan the tracking light at random up and down and right and left until the position where the tracking light is reflected by the prism is detected. There is a long working time. Further, since the total station uses a theodolite equipped with a distance measuring instrument as a basic device, there is a problem that the structure becomes complicated and expensive.
[0007]
In view of such circumstances, the present invention uses a rotating laser device, is a simple and inexpensive device, and is surely simple regardless of the outdoors, indoors, places where there are obstacles affecting radio wave reception, etc. Thus, the position of the object can be quickly measured or the target object can be positioned at a predetermined position.
[0008]
[Means for Solving the Problems]
The present invention comprises a rotary laser device that rotates and irradiates a laser beam, and a measurement point indicator device that has a reflecting portion that receives the laser beam and reflects it toward the rotary laser device, and the measurement point indicator device is the rotary laser. The present invention relates to a position measurement setting device having a transfer mechanism for transferring the position of the measurement point indicator device in response to the information of the device, and a main body portion where the rotary laser device rotates and irradiates a laser beam, and the measurement point indicator device. A distance measurement unit that performs distance measurement and transmits a distance measurement result to the measurement point index device, the measurement point index device receives a distance measurement result to be transmitted; and a received distance measurement result. The present invention relates to a position measurement setting device having a display unit for displaying, a rotation driving unit in which the rotating laser device rotates the main body, and a direction detector for detecting the direction of the distance measuring unit from the laser beam irradiated by rotation. A light receiving unit for detecting the direction of the surveying point indicator device from the reflected laser beam, and rotating the rotation driving unit until the detection of the direction detector and the light receiving unit coincides, The present invention relates to a position measurement setting device that is controlled so as to be directed to the measurement point index device, and the rotary laser device detects a direction of a distance measuring unit from a rotation drive unit that rotates the main body unit and a laser beam that is rotated and irradiated. A direction detector; a light receiving unit that detects the direction of the survey point index device from the reflected laser beam; a first encoder that detects the amount of rotation of the laser beam to be rotated; and a rotation amount of the main body unit An angle difference is calculated from the rotation amount of the first encoder when detected by the direction detector and the light receiving unit, and based on the second encoder so as to eliminate the angle difference. The The rotational driving unit is operated by a degree difference, and the distance measuring unit is directed to the position measuring and setting device, and the laser beam of the rotating laser device and the ranging light of the ranging unit are coaxial. The main body unit is related to a position measurement setting device having a scanning unit for scanning a laser beam irradiated in rotation along the rotation direction, and the laser beam and distance measuring unit emitted from the main unit. The distance measuring light emitted from the position is related to a position measurement setting device having a predetermined divergence angle on the vertical plane, the transfer mechanism has a transfer rod, and the transfer rod is suspended vertically by a free support means. The rotation drive unit includes an encoder that detects a rotation amount of the main body, and relates to a position measurement setting device that calculates a rotation angle from the rotation amount of the main body. Also said The transfer rod can be dropped, and is related to a position measurement setting device that indicates a measurement point at the tip, and is related to a position measurement setting device in which the tip of the transfer rod has a stone bump shape or a stamp structure, and the measurement point The index device relates to a position measurement setting device having a fixing means capable of releasing the transfer rod, and the measurement point index device is a position measurement setting device having a scale capable of measuring the distance to the tip of the transfer rod. In addition, the present invention relates to a position measurement setting device in which a scale is formed on the transfer rod, and the measurement point index device relates to a position measurement setting device having communication means for controlling the operation of the rotary laser device. The means relates to a position measurement setting device that is optical communication with modulation, and the communication means is wireless, and the measurement point indicator device is provided with a transmission device, and the rotating laser device is provided. And the communication means relates to a position measurement setting device which is a reflecting surface pattern arranged so as to control the operation of the rotary laser device, and further, a measurement point. An index device, and a rotating laser device that measures a distance and a direction angle to the measurement point index device. The measurement point index device stores position information, and from a measurement result from the rotary laser device, A program for calculating a position, wherein the rotating laser device detects and measures the measurement point index device placed on a known point, and is a reference point by communication from the measurement point index device A second step recognized by the rotary laser device; a third step by which the rotary laser device measures the moved measurement point indicator device; and a position stored in the measurement point indicator device. A position measurement setting method comprising: a fourth step for comparing information with the measurement result of the third step; and a fifth step for determining a position based on the coincidence of the stored position information and the measurement result. An index device, and a rotary laser device that measures a distance and a direction angle to the measurement point index device. The measurement point index device calculates a position from a measurement result from the rotary laser device; A surveying program for obtaining a predetermined result based on the calculation result, wherein the rotating laser device detects and measures the measurement point indicator device placed on a known point; and from the measurement point indicator device A second step in which the rotary laser device recognizes that it is a reference point by communication; a third step in which the rotary laser device measures the moved measurement point index device; The present invention relates to a position measurement setting method comprising a fourth step of calculating a position from the measurement result of the third step and a fifth step of executing a calculation program based on the calculation result and obtaining a predetermined result.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
The present invention irradiates and rotates a visible laser beam to form a reference line and a reference plane, receives the laser beam from the rotary laser device, and reflects the laser beam toward the rotary laser device. It is a device that includes a measurement point index device (target object) and performs horizontal positioning with the measurement point target device.
[0011]
FIG. 1 shows a main part of a rotary laser device 1, which is provided with a main body 2, a rotating part 3 that is rotatably provided on the main body 2, and the main body 2 attached thereto. A reference device which is composed of a rotating device 4 for rotating the unit 2 and a distance measuring unit 5 which is detachably provided on the main body unit 2 and has a predetermined polarization (preferably circularly polarized light). A reference light emitting unit 6 that emits light, a light receiving unit 7, an inclination detecting unit 8, and a control unit 9 (described later) are provided. The measuring point index device 10 is set up at the measuring point so as to face the rotating laser device 1.
[0012]
The reference light emitting unit 6 will be described.
[0013]
The reference light emitting unit 6 is provided concentrically with the rotation axis of the rotating unit 3 and includes a light emitting element 11 typified by a semiconductor laser element. The laser beam 27 emitted from the light emitting element 11 is converted into a parallel light beam by the condenser lens 12, passes through the half mirror 13, is circularly polarized by the ¼λ wavelength plate 20, and is emitted to the rotating unit 3. The reflected laser beam 27 reflected from the measurement point index device 10 and incident on the reference light emitting unit 6 again is linearly polarized again by the ¼λ wavelength plate 20 and is incident on the light receiving unit 7 by the half mirror 13. Reflected towards.
[0014]
The light receiving unit 7 will be described.
[0015]
A condensing lens 14 and a polarizing beam splitter 15 are disposed on the reflection optical axis of the half mirror 13, and a light receiving element 16a is disposed on the transmission optical axis of the polarizing beam splitter 15, and a light receiving element 16b is disposed on the reflection optical axis. It is installed. The reflected light reflected from the measurement index device 10 and incident through the rotating unit 3 is reflected by the half mirror 13, collected by the condenser lens 14, and polarized by the polarizing beam splitter 15. Depending on the state, it is transmitted toward the light receiving element 16a or reflected toward the light receiving element 16b, forms an image on the light receiving surfaces of the light receiving elements 16a and 16b, and is detected by the light receiving elements 16a and 16b. The light reception signals of the light receiving elements 16a and 16b are detected and detected by the detection circuit (not shown) as the measurement point index device 10.
[0016]
The inclination detector 8 will be described.
[0017]
The tilt detector 8 has a configuration in which an X-axis tilt sensor 17 and a Y-axis tilt sensor 18 that are uniaxial tilt sensors are arranged in two orthogonal directions, and when the apparatus main body is installed vertically, The tilt sensor 17 and the Y-axis tilt sensor 18 detect the horizontal plane, and the laser beam 27 forms a horizontal laser plane.
[0018]
Thus, the X-axis tilt sensor 17 and the Y-axis tilt sensor 18 detect the tilt of the rotary laser device 1 in the state shown in FIG.
[0019]
The said rotation part 3 is demonstrated.
[0020]
The prism holder 21 is supported so as to be rotatable about the optical axis of the reference light emitting unit 6. A pentaprism 22 is fixed to the prism holder 21, and the pentaprism 22 is connected to the laser from the reference light emitting unit 6. The light beam 27 is deflected at a right angle. The prism holder 21 is provided with a scanning gear 23, and a scanning motor 25 is connected to the scanning gear 23 via a drive gear 24, and the pentagonal prism 22 is rotated by the scanning motor 25. . The prism holder 21 may be provided with an encoder for detecting the rotation position and rotation angle of the prism holder 21 (that is, the pentaprism 22).
[0021]
The pentaprism 22 deflects the laser beam 27 emitted from the reference light emitting unit 6 in the horizontal direction, and reflects the reflected laser beam 27 reflected from the measurement point indicator device 10 to the optical axis of the reference light emitting unit 6. The light is deflected in the direction and incident on the light receiving unit 7 through the half mirror 13.
[0022]
The rotating device 4 will be described.
[0023]
The main body 2 is rotatably mounted on the rotating device 4. A lower shaft of the main body 2 is provided with a rotating shaft 55 protruding from the rotating device 4, and the rotating shaft 55 is interposed via a gear train 56. Are connected to the direction control motor 57. The rotary shaft 55 is provided with an encoder 58 so that a relative angle between the rotating device 4 and the main body 2 can be detected. Thus, the main body 2 is rotated by driving the direction control motor 57, and the rotation angle of the main body 2 is detected by the encoder 58.
[0024]
The distance measuring unit 5 will be described.
[0025]
The distance measuring unit 5 includes a range finder 29, a direction detector 30, and a distance calculating unit 31 described later. First, the distance measuring probe 29 will be described.
[0026]
The distance measuring light 39 emitted from the distance measuring instrument 29 is emitted so as to be parallel to the reference plane formed by the laser beam 27. A collimating lens 32 and a prism 33 are disposed on the optical axis. A ranging light emitting unit 34 is provided on one side of the prism 33, and a ranging light receiving unit 35 is provided on the other side. .
[0027]
The distance measuring light emitting unit 34 has a light source (LED, LD, etc.) 36 that emits distance measuring light 39. The light source 36 is controlled in light emission state by a light emission control unit (not shown), and the distance measuring light 39 is emitted. In addition, communication data is superposed by means such as modulation.
[0028]
Ranging light 39 from the light source 36 is emitted toward the prism 33 through a collimator lens 37 and an optical fiber 38, and the ranging light 39 emitted from the optical fiber 38 is emitted to the ranging light by an optical path switching chopper 41. The distance measuring light 39 is reflected by the prism 33 and emitted by the collimator lens 32 as a parallel light beam. The emitted distance measuring light 39 is reflected by the measurement point index device 10 to be described later, and enters the distance measuring probe 29 through the collimating lens 32.
[0029]
Further, the internal reference light 39a emitted from the optical fiber 38 and switched from the distance measuring light 39 by the optical path switching chopper 41 passes through a relay lens 42 and is internally reflected by the prism 33. Light enters the light receiving unit 35.
[0030]
The ranging light receiving unit 35 includes a band pass filter 43 and a density filter 44, and the ranging light 39 transmitted through the band pass filter 43 and the density filter 44 is measured via an optical fiber 46 and a condenser lens 48. The light receiving element 49 is configured to receive light.
[0031]
The distance measuring unit 31 includes a driver (not shown) for driving the light source 36, and also uses the distance measuring light 39 received by the distance measuring light receiving element 49 and a light reception signal of the internal reference light 39a to measure the measurement point index device. The distance up to 10 is calculated.
[0032]
The direction detector 30 includes a reflecting mirror 51 that reflects a part of the laser beam 27 emitted from the pentaprism 22, a condenser lens 52 that converges the laser beam 27 reflected by the reflecting mirror 51, and a direction detection detector. The light receiving sensor 53 is configured such that when the direction of the pentaprism 22 coincides with the optical axis of the reflecting mirror 51, a part of the irradiation light from the pentaprism 22 is received by the light receiving sensor 53. . That is, it is detected whether the laser beam from the pentaprism 22 with respect to the distance measuring direction, that is, the rotating unit 3 is directed in the distance measuring direction.
[0033]
The controller 9 will be described with reference to FIG.
[0034]
Signals from the direction detector 30 and the encoder 58 are input to the control unit 9, and signals from the light receiving unit 7, the inclination detection unit 8, and the distance measurement calculation unit 31 are input. The scanning motor 25 is driven by a motor driver 62 based on a control signal from the control unit 9, and the direction control motor 57 is driven by a motor driver 63. Further, the light emitting element 11 is driven by a driver 61 based on a control signal from the control unit 9, and the light emitting element 11 emits light.
[0035]
An operation unit 64 and a display unit 65 are connected to the control unit 9, and work instructions such as operation start / stop are input from the operation unit 64. Display or display of information to be sent to the measurement point index device 10 is performed.
[0036]
The control unit 9 may be divided into the main body unit 2 and the distance measuring unit 5, and when one is integrated, either one may be used as the main control unit. By dividing, the distance measuring unit 5 can be separated.
[0037]
3 and 4, the measurement point index device 10 will be described.
[0038]
A reflection plate 71 is fixed to a surface (front surface) of the vertical portion of the main frame 70 that is bent in a substantially L-shape so as to face the main body 2, and a display unit 72 is attached to the back surface of the vertical portion. It has been.
[0039]
A V-shaped notch that is an index 71a indicating the reference position of the rotating laser beam is formed on both side edges of the reflecting plate 71, and a reflecting part is provided on the front surface. The reflection surface 73a and the polarization conversion reflection surface 73b and the polarization preserving reflection surface 74a and the polarization conversion reflection surface 74b are provided symmetrically with respect to the center line in a paired state. A retroreflective sheet or the like is used for the polarization preserving reflection surfaces 73a and 74a. When the laser beam 27 is incident, the polarization preserving reflection surfaces 73b and 74b are retroreflective. A quarter-wave plate is further affixed on the sheet, and when the laser beam 27 is incident, the phase is polarized by 90 ° and reflected. Thus, the reflection plate 71, the polarization preserving reflection surface 73a, the polarization conversion reflecting surface 73b, the polarization preserving reflection surface 74a, and the polarization conversion reflecting surface 74b constitute a reflecting portion.
[0040]
A rectangular distance measuring reflecting surface 75 is provided below the reflecting surfaces 73a, 73b, 74a, and 74b, and a light receiving window 76 is formed in the center of the distance measuring reflecting surface 75. Light 39 is received by the light receiving element 78 through the light receiving window 76.
[0041]
The display unit 72 includes a signal processing unit 79 that separates and extracts communication data from the ranging light reception signal from the light receiving element 78. The distance between the light receiving center of the light receiving element 78 and the straight line connecting the indexes 71a and 71a is equal to the distance between the distance measuring light 39 and the rotating laser beam 27 emitted in parallel. The display unit 72 has a display unit 80 on the back surface, and the information separated and extracted by the signal processing unit 79 is displayed on the display unit 80.
[0042]
In order to detect the measurement point indicator device 10, the light receiving unit 7 includes polarized light, a polarization preserving reflection surface, and two light receiving elements 16a and 16b that receive light according to the polarized light. This is a configuration for receiving noise light and preventing malfunctions easily. However, basically, the reflection plate 71 may be merely two retroreflective surfaces 73a and 74a as shown in FIG. Furthermore, a single retroreflective surface is possible in a place where no malfunction occurs.
[0043]
In the case of two retroreflecting surfaces, a polarization preserving reflecting surface, or a polarization converting reflecting surface, the quarter-wave plate 20 that converts the circularly polarized light of the reference light emitting unit 6 is not necessary, and the light receiving unit 7 also includes one light receiving element.
[0044]
A measurement point setting unit 82 is provided in the horizontal part of the main frame 70.
[0045]
A swing ring 83 is swingably provided on the horizontal portion via a first horizontal shaft 84, and a gimbal frame 86 is swingably provided on the swing ring 83 via a second horizontal shaft 85. ing. The gimbal frame 86 is provided with a transfer mechanism. The transfer mechanism will be described below.
[0046]
A transfer rod 87 is provided to be movable in the vertical direction. The transfer rod 87 has a required weight and has a sharp end with a sharp tip at the lower end, and a scale 90 is imprinted on the cylindrical surface along the axial direction. If the distance between the scale reading position and the index 71a is previously taken into account as an offset value, the reading of the scale 90 immediately becomes the height of the measuring point index device 10, that is, the irradiation height of the laser beam 27.
[0047]
One end of a lock plate 88 is pressed against the transfer rod 87 by a spring 89, and the position of the transfer rod 87 is held by a frictional force with the lock plate 88. The swing link 83 is provided with a lock release button 91 that can be moved back and forth toward the other end of the lock plate 88, and the lock release button 91 is urged in a backward direction by a spring (not shown). In addition, the unlocking button 91 is slidably provided on the second horizontal shaft 85 as shown in the figure, and the axial center of the unlocking button 91 is matched with the axial center of the second horizontal shaft 85. No unnecessary moment is generated when the unlock button 91 is operated.
[0048]
Thus, the transfer rod 87 is always oriented in the vertical direction by the gimbal mechanism. When the lock release button 91 is pushed and the lock is released, the transfer rod 87 falls vertically, and the transfer rod 87 When the lower end of the sensor collides with the ground, the measurement point is transferred to the ground, for example, by making a dent in the ground, and the height of the measurement point indicator device 10 is known by the scale 90. It has become.
[0049]
The gimbal frame 86 may be supported not by a gimbal structure but by a spherical seat. If the ground is concrete or tile, it is difficult to damage or if it is not desired to be damaged, marking is performed by attaching a stamp or the like to the tip. Further, instead of the combination of the gimbal frame and the rod, the weight may be directly lowered, or the position can be marked in the same manner even when liquid such as paint is dropped.
[0050]
The operation will be described below.
[0051]
An operator holds the measurement point index device 10 in a state in which the transfer rod 87 is raised, and holds it near the set point.
[0052]
The rotary laser device 1 is driven by the operation unit 64.
[0053]
First, leveling of the rotary laser device 1 is performed, and the rotary laser device 1 is set in a horizontal state based on the tilt detection from the tilt detector 8. Next, the light emitting element 11 emits light, the laser beam 27 is irradiated in the horizontal direction through the pentaprism 22, the scanning motor 25 is further driven, the laser beam 27 is rotated, and the measurement point index device 10 is irradiated. The search state becomes.
[0054]
The operator adjusts the height position of the reflection plate 71 so that the laser beam 27 passes through the index 71a. When the laser beam 27 is positioned so as to pass through the index 71 a, the height of the distance measuring light 39 coincides with the light receiving center of the light receiving element 78. The laser beam 27 passes through the polarization preserving reflection surface 73a, the polarization conversion reflecting surface 73b, the polarization preserving reflection surface 74a, and the polarization conversion reflecting surface 74b, so that the light receiving element 16a receives the reflected light in which the polarization is preserved. The light receiving element 16b receives the reflected light whose polarization has been converted.
[0055]
Further, the light receiving unit 7 outputs a light receiving signal in accordance with a pattern peculiar to the measurement point indicator device 10, and can recognize and specify the reflection plate 71 from the light receiving signal, and from which direction. It can be known whether the laser beam 27 crosses the measurement point indicator device 10. By combining this reflecting surface and polarized light, the noise light and the reflected light from the measurement point index device 10 can be accurately distinguished, and erroneous operation is prevented.
[0056]
When the reflected light from the measurement point index device 10 is received and there is no output from the light receiving sensor 53 of the direction detector 30, the exit direction of the distance measuring probe 29 is set to the direction of the measurement point index device 10. Since this is not the case, the control unit 9 operates the rotation device 4 to rotate the main body 2 until the light receiving sensor 53 outputs. When the rotating unit 3 includes an encoder, an angular difference is detected from the encoder output at the time of detection of the light receiving sensor 53 and detection of the light receiving unit 7 that receives reflected light from the measurement point index device 10. The rotation device 4 is operated according to the encoder 58 by calculating the angular difference.
[0057]
The encoder 58 is also used when calculating the direction angle of the measurement point indicator device 10 from the reference direction. The control unit 9 calculates the position of the measurement point index device 10 from the distance and direction.
[0058]
In order to make the distance measuring unit 5 and the measurement point indicator device 10 face each other, the time when the light receiving unit 7 receives light and the time when the direction detector 30 receives light are measured, and the rotational speed of the pentaprism 22 is measured. Therefore, the angle difference with respect to the measurement point index device 10 can be detected, and the main body 2 may be rotated by the direction control motor 57 by an amount corresponding to the angle difference. Alternatively, in a state where the pentaprism 22 is rotated, the direction control motor 57 is further driven to rotate the main body 2 to obtain a point detected by the light receiving unit 7 and the direction detector 30 at the same time. Also good.
[0059]
Reflected light from the distance measuring reflecting surface 75 is incident on the distance measuring instrument 29, and the distance between the rotary laser device 1 and the measuring point index device 10 is measured. The distance measurement information is superimposed on the distance measurement light 39 by a method such as modulating the distance measurement light 39.
[0060]
The distance measuring light 39 is received by the light receiving element 78 and further converted into a light receiving signal. The signal processing unit 79 separates and extracts distance measurement information from the received light signal and displays it on the display unit 80.
[0061]
The operator holding the measurement point index device 10 determines from the information displayed on the display unit 80 whether the position holding the measurement point index device 10 matches the point to be set. If not, move it to the proper position.
[0062]
When the measurement point indicator device 10 reaches the set position, the lock release button 91 is pushed in, the holding of the transfer rod 87 is released, it falls by its own weight, and the measurement result is transferred to the ground. As described above, since the transfer rod 87 is accurately oriented in the vertical direction by the gimbal structure, there is no error in the transfer result even if the measurement point indicator device 10 is held in an inclined state. , Accurate position setting can be performed. Further, as described above, since the lock release button 91 is aligned with the second horizontal shaft 85, no shaking or the like occurs when the lock release button 91 is operated.
[0063]
Further, if the scale 90 is read in a state where the laser beam 27 is aligned with the index 71a, the height of the ground with respect to the reference plane can be measured immediately. That is, three-dimensional surveying can be performed simply and quickly. In addition, by dropping the transfer rod 87 onto an existing point and setting it, the point itself can be measured.
[0064]
The measurement point index device 10 shown in FIGS. 6 and 7 has a configuration for issuing an operation command to the rotary laser device 1 during the measurement, after the measurement is completed, or the like.
[0065]
First, the measurement point index device 10 shown in FIG. 6 has a light emitting unit 66 that radiates operation light diffusely toward the light receiving unit 49 of the distance measuring unit 5 or the light receiving unit 7 of the rotary laser device 1. . In response to an instruction from an operation button (not shown) provided on the display unit 72, operation light is emitted toward the rotary laser device 1 in accordance with a predetermined modulation. The light receiving unit 7 receives the operation light, and performs a predetermined operation on the rotary laser device 1 side based on the light reception result.
[0066]
The measurement point index device 10 shown in FIG. 7 uses the rotated laser beam 27 to issue an operation command. The polarization preserving reflection surfaces 67a, 67b, 67c, 67d and the polarization conversion reflection surfaces 68a, 68b, 68c are arranged in the rotation direction of the laser beam 27 alternately or at different widths, and the reflected light of the laser beam 27 is modulated. . The reflected light is received by the light receiving unit 7 on the rotary laser device 1 side. Thus, the reflecting surfaces of each row arranged in the rotation direction have the same function as a barcode, and a predetermined operation is performed on the rotating laser device 1 side by the pattern detected by the light receiving unit 7. Do. The same effect can be obtained even if the reflecting surfaces of each row are arranged at intervals.
[0067]
In addition, as another method for easily performing the search, there is a method in which a diffused lens 97 or the like is used as shown in FIG. In this case, the ranging light also needs to be fan-shaped. In the case of a sector, the measurement distance is shortened. In this case, the position in the height direction cannot be specified.
[0068]
As described above, the rotating laser beam 27 of the rotating laser device 1 and the distance measuring light 39 of the distance measuring device are parallel to each other and emitted from the respective devices. This is an advanced type of the conventional rotary laser device, because the distance measuring device is attached to the rotary laser device, and this is provided on the rotating device so as to be directed to the measurement point indicator device 10.
[0069]
However, if this is not the case, the rotating laser beam 27 and the distance measuring beam 39 may be irradiated from the same axis. FIG. 9 shows the rotary laser device 1 that irradiates the laser beam 27 and the distance measuring light 39 coaxially, and FIG. 10 shows the measurement point index device.
[0070]
FIG. 9 shows a main part of the rotary laser device 1. The rotary laser device 1 is attached to and detached from the main body 2, the rotating part 3 rotatably provided on the main body 2, and the main body 2. The main body unit 2 is provided with a reference light emitting unit 6 that emits a reference laser beam, a light receiving unit 7, an inclination detecting unit 8, and a focusing optical system 111. Yes.
[0071]
The reference light emitting unit 6 will be described.
[0072]
A first laser diode 113 that emits a visible laser beam 27 is disposed on one side of the beam splitter 112, and the first laser diode 113 and the beam splitter 112 are arranged on the optical axis of the first laser diode 113. A collimator lens 114 that makes the laser beam 27 a parallel beam is disposed between them. Further, a scanning means 96 is provided on the optical axis of the laser beam 27, and an image rotator 108 is rotatably provided.
[0073]
The scanning means 96 increases the apparent brightness by causing the laser beam 27 to reciprocate along the rotation direction even when the rotation of the rotating unit 3 is stopped. Here, as the scanning means, for example, a galvanometer that changes the traveling direction of the incident laser beam by vibrating the mirror, a rotating polygon mirror scanner that rotates the polygon mirror and scans the reflected light, and the direction and pitch of the diffraction grating are spatially determined. For example, a hologram disk scanner or an acousto-optic device that scans the laser beam 27 by forming a plurality of holograms changed in the above manner on the disk and rotating the hologram may be used.
[0074]
In order to associate the irradiation direction by the rotating unit 3 with the deflection of the irradiation direction by the scanning unit 96, the scanning unit 96 is provided with a deflection detecting unit (not shown) for detecting the deflection. As the deflection detecting means, an encoder is used when the scanning means 96 rotates the hologram disk, and when the scanning means 96 uses an acousto-optic device, the frequency is counted temporally. The actual irradiation direction is detected by calculation in association with the position detected by the encoder 26.
[0075]
The image rotator 108 is provided on the rotation axis of the perforated bevel gear 110, and the perforated bevel gear 110 is provided so as to be rotatable about the optical axis of the laser beam 27. The image rotator 108 has a function of rotating the projection image twice by one rotation.
[0076]
The beam splitter 112 reflects the first laser diode 113 and the laser beam 27 and transmits distance measuring light 39 from a light source 36 described later. A laser beam 27 from the first laser diode 113 is reflected by the beam splitter 112, passes through a perforated mirror 115, passes through the focusing optical system 111, and is directed to a pentaprism 22 described later, and is deflected by the pentaprism 22. , Irradiated horizontally. A lens group of the focusing optical system 111 is provided between the beam splitter 112 and the rotating unit 3, and a focusing optical system driving unit (not shown) based on distance measurement data of the distance measuring unit 5. Adjusts the lens position to focus the laser beam 27 on the position of the object to be measured.
[0077]
The said rotation part 3 is demonstrated.
[0078]
The prism holder 21 is supported so as to be rotatable about the exit laser beam optical axis of the beam splitter 112, the pentaprism 22 is fixed to the prism holder 21, and the pentaprism 22 is connected to the reference light emitting unit 6. The laser beam 27 is deflected at a right angle. The prism holder 21 is provided with the encoder 26 for detecting the rotation of the prism holder 21 (that is, the pentaprism 22).
[0079]
The light receiving unit 7 detects reflected light when the laser beam 27 emitted from the pentaprism 22 is reflected by the measurement point index device 10 and the reflected light enters the rotary laser device 1.
[0080]
The scanning gear 23 is fixed to the prism holder 21, the driving gear 24 is engaged with the scanning gear 23, the driving gear 24 is fitted to the driving shaft 116 of the scanning motor 25, and the scanning motor 25 is engaged. Is driven and rotated. A small bevel gear 117 is fitted on the drive shaft 116, and the small bevel gear 117 meshes with the perforated bevel gear 110, and the gear ratio between the perforated bevel gear 110 and the small bevel gear 117 is 2. The pentagonal prism 22 and the image rotator 108 are connected by a gear train 109 with a reduction ratio of 2: 1, and the image rotator 108 makes one rotation with respect to two revolutions of the pentaprism 22. It is like. Thereby, the rotation of the laser beam by the scanning means 96 accompanying the rotation of the pentaprism 22 can be canceled.
[0081]
The tilt detector 8 includes the X-axis tilt sensor 17 and the Y-axis tilt sensor 18 in two orthogonal directions, and detects a horizontal plane when the reflected optical axis of the beam splitter 112 is vertical.
[0082]
Thus, the X-axis tilt sensor 17 and the Y-axis tilt sensor 18 detect the tilt of the rotary laser device 1 in the state shown in FIG.
[0083]
The distance measuring probe 29 has the same configuration as that shown in FIG. 1, and the distance measuring light 39 from the distance measuring instrument 29 is incident from the beam splitter 112 and passes through the main body and the pentaprism 22 to emit a laser beam. And irradiated coaxially. Further, the light is reflected by the measurement point index device 10 which will be described later, and enters through the pentaprism 22, the beam splitter 112, and the like. When the rotating laser device 1 shown in FIG. 9 faces the measurement point index device 10, the rotation operation of the rotating unit 3 is fixed in the direction of the measurement point index device 10 and distance measurement is performed. By means 96, the laser beam continues to reciprocate.
[0084]
The measurement point index device 10 shown in FIG. 10 is used in the case of being coaxial, and has the distance measuring reflecting surface 75 'on a line connecting the index 71a and the index 71a. The distance measuring reflection surface 75 ′ is provided with a band-pass filter that transmits the distance measuring light 39. The reflected light reflected by the distance measuring reflection surface 75 ′ is only the distance measuring light 39. The light enters the distance measuring unit 5. By providing the distance measuring reflection surface 75 ′, the distance measuring light 39 and the laser beam 27 can be separated, and the S / N of the distance measuring light 39 can be improved.
[0085]
Next, a modified example of the measurement point index device 10 will be described with reference to FIG.
[0086]
FIG. 11 shows the reflection plate 71 portion of the measurement point index device 10, wherein the light receiving window 76 is circular, and the distance measuring reflection surface 75 is also concentric with the light receiving window 76. An index line 101 is imprinted around the reflection surface 75 for distance measurement.
[0087]
When working outdoors, the laser beam 27 that is radiated in rotation may have poor visibility, and it is difficult to accurately match the index 71a. In this case, as one method, the distance measuring light 39 may be visible light, and the distance measuring light 39 may be used as a reference light for alignment. Since the distance measuring light 39 is spot light, the visibility is high. Align as a reference. That is, the distance measuring light 39 is aligned with the index line 101. Since the distance measuring light 39 and the laser beam 27 are parallel and the distance between them is constant, by aligning the distance measuring light 39 with the index line 101, the measuring point index device 10 can be accurately placed at the horizontal reference position. It can be set.
[0088]
When a visible laser beam is used as the rotating laser beam (laser beam 27) and a visible laser beam is also used as the distance measuring light 39, the reflection member generally has a retrodiffusibility. Rotating laser beams are mixed with the optical system, resulting in noise light. In these cases, if the rotating laser beam and the ranging light are divided into visible laser beam / invisible laser beam, the noise light can be removed by the noise filter by installing a noise filter in the distance measuring probe 29. it can.
[0089]
As a second method, the measurement point index device 10 shown in FIG. 12 accurately detects the laser beam 27 without relying on the operator's visual recognition, and accurately sets the measurement point index device 10 at the reference height. This is what you can do.
[0090]
In the measuring point index device 10, another set of reflecting members 103 is provided between the polarization conversion reflecting surface 73b and the polarization preserving reflecting surface 74a. The reflecting member 103 is provided on the center line of the reflecting plate 71, has a vertically long strip shape, and has two reflecting surfaces divided into two by a diagonal line.
[0091]
One reflecting surface is a retroreflecting surface, which is a polarization preserving reflecting surface 103a that preserves and reflects the polarization state of the laser beam 27, and the other reflecting surface is affixed with a 1 / 4λ phase difference member. This is a polarization conversion reflection surface 103b that changes the polarization state of the light beam 27 and reflects it.
[0092]
Thus, the polarization preserving reflection surface 103a has an inverted triangular shape, and the polarization conversion reflecting surface 103b has an upright triangular shape. When the reflection member 103 is scanned in the horizontal direction, the line segment lengths of the two coincide with each other. The position is the center.
[0093]
As described above, the light receiving elements 16a and 16b detect the laser beams 27 having different polarization states. The laser beams 27 cross the reflecting member 103 as shown in FIG. In the case of scanning, a light reception signal that is output when the light receiving elements 16a and 16b receive the reflected laser beams reflected by the polarization preserving reflection surface 103a and the polarization conversion reflection surface 103b is as shown in FIG. 13B. Thus, by comparing the pulse widths t1 and t2, it can be determined whether the passing position of the laser beam is above or below the center, and by detecting the point where the pulse widths t1 and t2 are equal, the measurement point index is measured. The center of the device 10 can be detected. As a method for displaying the alignment of the worker, an arrow or the like is provided on the display unit, and the arrow is turned on to indicate the direction in which the measurement point indicator device 10 moves up and down.
[0094]
FIG. 14 shows a further modification of the reflecting portion of FIG.
[0095]
In the measurement point indexing device 10 of FIG. 14, the reflecting portion 105 is configured by four reflecting surfaces 106a, 107b, 107a, 106b, and the reflecting surfaces 106a, 107b, 107a, 106b are arranged adjacent to each other, and the reflecting surface. Reference numerals 106a and 107a denote polarization preserving reflection surfaces, and the reflection surfaces 106b and 107b are polarization conversion reflection surfaces. Further, a width changing portion similar to that of the reflecting member 103 is provided at the boundary between the reflecting surface 107b and the reflecting surface 107a, and this width changing portion has the effect of showing the center as in FIG.
[0096]
FIG. 15 shows still another measurement point index device 10. When the above-described diffusing lens or the like is used, the measurement point index device 10 uses a highly reflective prism so that the detection distance is not shortened.
[0097]
In the measurement point index device 10, a prism 120 such as a corner cube is used as a reflecting portion.
[0098]
The prism 120 is supported by the reflection plate 71 via a gimbal support mechanism 121. The gimbal support mechanism 121 causes the prism 120 to always face the rotating laser device 1, and the optical axis of the prism 120 and the laser beam. 27 is eliminated, and errors due to reflection at the prism 120 are eliminated.
[0099]
FIG. 16 shows a modification of the rotary laser device 1.
[0100]
In FIG. 16, the same components as those shown in FIG.
[0101]
The main body 2 is fixed to the rotating device 4, and a rotating portion 125 that rotates around the main body 2 around the main body 2 is provided. A ring-shaped driven gear 126 is attached to the rotating portion 125. The rotating device 4 has a motor 127, and a driving gear 128 of the motor 127 is meshed with the driven gear 126. An encoder 129 is provided between the main body 2 and the distance measuring unit 5 (or the rotating unit 125), and the encoder 129 can detect the direction of the distance measuring unit 5.
[0102]
Thus, by driving the motor 127, the distance measuring unit 5 rotates through the drive gear 128 and the driven gear 126. When the rotation unit 125 is driven while rotating the distance measuring unit 5 to rotate and irradiate the laser beam 27, the light receiving element is in a state where the distance measuring unit 5 is not directly facing the measurement point indicator device 10. There is a time lag between the detection of the reflected light 16 and the detection of the laser beam 27 of the direction detector 30, and the distance measuring unit 5 is in a state where the detection deviation between the light receiving element 16 and the direction detector 30 is eliminated. It faces the measurement point index device 10. Therefore, if the detection angle of the encoder 129 is obtained in the state where there is no detection deviation between the light receiving element 16 and the direction detector 30, the distance measuring unit 5 determines the detection angle. The angle is directly opposite.
[0103]
In the above embodiment, optical communication is used as the communication means, but it goes without saying that wireless communication may be used.
[0104]
Examples of the present invention will be described below.
[0105]
[Example 1]
Hereinafter, a method for positioning the measurement point based on the position information will be described.
[0106]
The rotating laser device 1 can measure the distance to the measuring point index device 10 and the rotation angle (direction angle). The measurement point index device 10 stores position information for positioning, and includes a current position calculation program for calculating the current position from the distance from the rotary laser device 1 and the direction angle.
[0107]
First, the rotary laser device 1 is arranged at a point that covers the measurement point. Next, the measurement point index device 10 is set up on the known point. The rotating laser device 1 detects the measurement point index device 10 and starts measurement with the rotating laser device 1 main body directed in the direction.
[0108]
A distance and a direction angle are transmitted from the rotary laser device 1 to the measurement index device 10. The measurement point indicator device 10 instructs the current measurement point to be a reference point by communication means. In response to the command, the rotary laser device 1 sets the distance and direction of the reference point. At this time, the direction angle is reset.
[0109]
The measurement point index device 10 is moved from the first point, which is the reference point, to the second point. Similarly, the rotary laser device 1 starts measurement. A distance and a direction angle are transmitted from the rotary laser device 1 to the measurement point index device 10. The measurement point index device 10 calculates the current point from the distance and the direction angle. The stored position information is compared with the current point, and it moves until it matches. If they match, the position is transferred and the position of the measurement point is determined. When determining a plurality of points, this is repeated.
[0110]
[Example 2]
Next, a method for measuring the position, area, etc. will be described.
[0111]
The rotating laser device 1 can measure the distance to the measuring point index device 10 and the rotation angle (direction angle). The measurement point index device 10 includes a current position calculation program for calculating a current position from a distance and a direction angle from the rotary laser device 1. Furthermore, for example, in the case of geodetic work, a surveying program for measuring according to the land shape and calculating the area and distance from the measurement result is incorporated.
[0112]
First, the rotary laser device 1 is arranged at a point that covers the measurement point. Next, the measurement point index device 10 is set up on the known point. The rotating laser device 1 detects the measurement point index device 10 and starts measurement with the rotating laser device 1 main body directed in the direction.
[0113]
A distance and a direction angle are transmitted from the rotary laser device 1 to the measurement index device 10. The measurement point index device 10 instructs the rotary laser device 1 by communication means that the current measurement point is a reference point. In response to the command, the rotary laser device 1 sets the distance and direction of the reference point. At this time, the direction angle is reset.
[0114]
The measurement point index device 10 is moved from the first point, which is the reference point, to the second point. Similarly, the rotary laser device 1 starts measurement. From the newly transmitted distance and direction angle, the measurement point index device 10 calculates the current point after movement. The measurement point index device 10 stores the current position by communication means and instructs the rotary laser device 10 to prepare for the measurement of the next measurement point. When determining a plurality of points, this is repeated.
[0115]
After the measurement is completed, the built-in survey program is activated to obtain the desired predetermined survey results such as area and distance between measurement points.
[0116]
【The invention's effect】
As described above, according to the present invention, measurement point setting and surveying for a predetermined point can be easily performed without being limited to the work place, and the measurement point index device search time by the rotary laser device is greatly increased. It shortens and exhibits the excellent effect of improving work efficiency.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.
FIG. 2 is a control block diagram of the previous embodiment.
FIG. 3 is a front view of a measurement point index device used in the embodiment of the present invention.
FIG. 4 is a side sectional view of the previous measurement index device.
FIG. 5 is a front view of an essential part showing a modified example of the measurement point indexing device of the present invention.
FIG. 6 is a front view of a main part showing another measurement point indexing device.
FIG. 7 is a front view of an essential part showing still another measurement point indexing device.
FIG. 8 is a partial view showing a modification of the embodiment of the present invention.
FIG. 9 is a schematic configuration diagram showing another embodiment of the present invention.
FIG. 10 is a front view of an essential part showing still another measurement point indexing device of the present invention.
FIG. 11 is a front view of an essential part showing still another measurement point indexing device.
FIG. 12 is a front view of an essential part showing still another measurement point indexing device.
FIGS. 13A and 13B are diagrams showing received light signals when the reflected light from the reflecting member is received.
FIG. 14 is a front view of an essential part showing still another measurement point indexing device of the present invention.
FIG. 15 is a front view showing still another measurement point indexing device.
FIG. 16 is an explanatory diagram of relevant parts showing another embodiment of the present invention.
[Explanation of symbols]
1 Rotating laser device
2 Body
3 Rotating part
4 Rotating device
5 Ranging section
6 Reference light emitter
7 Light receiver
8 Inclination detector
10 Measuring point index device
25 Scanning motor
26 Encoder
27 Laser beam
29 Rangefinder
30 direction detector
39 Distance measuring light
57 Directional control motor
58 Encoder
71 Reflection plate
72 display units
75 Reflective surface for distance measurement
79 Signal processor
80 display section
82 Measurement point setting section
91 Unlock button
96 Scanning means
109 Image Rotator
120 prism

Claims (15)

A position measurement setting device comprising a rotary laser device and a measurement point index device,
The rotating laser device is
A rotating unit for rotating and irradiating a laser beam ;
Ranging unit for measuring the distance to the measurement point indicator device, measuring the direction of the measurement point indicator device and transmitting measurement information including the distance and the measured direction to the measurement point indicator device;
A direction detector that receives a part of the laser beam and detects the direction of the distance measuring unit when the rotationally irradiated laser beam matches the direction of the distance measuring unit;
A light receiving unit that receives a laser beam reflected from the measurement point indicator device and detects a direction of the measurement point indicator device;
The rotation unit, the direction detector, and a rotation drive unit that integrally rotates the light receiving unit,
The measurement point index device is:
A reflection unit for reflecting the laser rotary irradiation device by receiving the laser beam,
Receiving means for receiving measurement information transmitted from the distance measuring unit;
A display unit for displaying the received measurement information;
A transfer rod supported so as to be suspended vertically by a universal support means;
The rotating laser device is controlled so as to rotate the rotation driving unit until the detection of the direction detector and the light receiving unit coincides, and to direct the distance measuring unit to the measurement point indicator device,
When the measurement point indicator device matches the measurement information received from the rotating laser device and the point to be set, the transfer rod falls and the position of the measurement point indicator device is indicated by indicating the measurement point at the tip. A position measurement setting device comprising a transfer mechanism for transferring a point to a point to be set. A first encoder for detecting the rotation amount of the laser beam that is rotating irradiation, and a second encoder for detecting the rotation amount of the rotator, wherein when said light receiving portion and the direction detector detects An angular difference is calculated from the rotation amount of the first encoder, and the rotational drive unit is operated by the angular difference based on the second encoder so as to eliminate the angular difference, and the distance measuring unit is used as the measurement point indicator device. The position measurement setting device according to claim 1 , wherein 2. The position according to claim 1 , wherein the laser beam of the rotating laser device and the ranging light of the ranging unit are emitted coaxially, and the rotating unit includes scanning means for reciprocatingly scanning the laser beam along the rotation direction. Measurement setting device. 2. The position measurement setting device according to claim 1 , wherein the laser beam emitted from the rotating unit and the distance measuring light emitted from the distance measuring unit have a predetermined divergence angle on a vertical plane. The rotation driving unit comprises an encoder for detecting the amount of rotation of the rotating unit, the position determining apparatus according to claim 1 for calculating a rotation angle from the rotation amount of the rotator. The position measurement setting device according to claim 1 , wherein a tip end of the transfer rod has a stone bump shape or a stamp structure. The position measurement setting device according to claim 1, wherein the transfer mechanism includes a fixing unit capable of releasing the transfer rod. The transfer rod is slidably provided, the transfer mechanism has a scale indicating the irradiation height of the laser beam, and the laser beam irradiation height is measured by reading the position of the transfer rod with the scale. The position measurement setting device according to claim 1, which is made possible . The position measurement setting device according to claim 7 , wherein a scale is formed on the transfer rod. The position measurement setting device according to claim 1 , wherein the measurement point index device includes communication means for controlling the operation of the rotary laser device. The position measurement setting device according to claim 10 , wherein the communication means is optical communication with modulation. The position measurement setting device according to claim 10 or 11 , wherein the communication means is wireless, the measuring point indicator device is provided with a transmitting device, and the rotating laser device is provided with a receiving device. The position measurement setting device according to claim 10 , wherein the communication means is a reflecting surface pattern arranged to control the operation of the rotary laser device. A position measurement setting method using the position measurement setting device according to claim 1,
The measurement point index device stores a position information and includes a program for calculating a current position from a measurement result from the rotary laser device, and the measurement point index device is placed on a known point. A first step of detecting and measuring, a second step of recognizing that the rotating laser device is a reference point by communication from the measuring point indicator device, and the rotating laser device measuring the moved measuring point indicator device Determining the position based on the coincidence of the stored position information and the measurement result, and the fourth step of comparing the position information stored in the measurement point index device with the measurement result of the third step. A position measurement setting method comprising the fifth step. A position measurement setting method using the position measurement setting device according to claim 1,
The measurement point index device includes a position calculation program for calculating a position from a measurement result from the rotary laser device and a surveying program for obtaining a predetermined result based on the calculation result, and the rotary laser device is placed on a known point. A first step of detecting and measuring the measured measurement point index device; a second step of recognizing that the rotating laser device is a reference point by communication from the measurement point index device; and the moved measurement point index A third step in which the rotating laser device measures the device; a fourth step in which a position is calculated from the measurement result in the third step; and a fifth step in which a predetermined result is obtained by executing a calculation program based on the calculation result. A position measurement setting method comprising:

Images