JP3802204B2 - Reference irradiation light detector - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a reference irradiation light detection device that detects reference irradiation light emitted from a light source.
[0002]
[Prior art]
When the reference irradiation light is detected by the reference irradiation light detection device, if the reference irradiation light detection device has an inclination, the position of the reference irradiation light is due to the distance between the light receiving unit of the reference irradiation light detection device and the index. In some cases, the position of the indicator is displaced. For this reason, conventionally, a bubble tube for an operator to confirm the inclination of the reference irradiation light detection device with the naked eye is arranged in the reference irradiation light detection device, and the reference irradiation light is detected based on the position of the bubble in the bubble tube. The inclination of the device was confirmed.
[0003]
[Problems to be solved by the invention]
In the above-described prior art, the efficiency of the operation for detecting the reference irradiation light is deteriorated, and the possibility of an operation error is increased.
[0004]
OBJECT OF THE INVENTION
In the reference irradiation light detection apparatus, the inclination of the apparatus is not visually confirmed using a bubble tube, but the inclination is detected and displayed by two light receiving units and / or the inclination is detected by sound. It is configured to warn, and it is an object to increase the efficiency of the operation for detecting the reference irradiation light and to reduce the possibility of an operation error.
It is another object of the present invention to provide a reference irradiation light detection device that can automatically correct a measurement error that occurs when the reference irradiation light detection device is tilted.
[0005]
[Means for solving the problems]
The reference irradiation light detection device of the present invention is provided with a first light receiving portion and a second light receiving portion which are provided on the main body so as to be spaced apart from each other and perpendicular to the direction in which the reference irradiation light is detected. And a light receiving state detecting means for detecting a light receiving state of the reference irradiation light based on an output signal output from at least one of the first light receiving unit and the second light receiving unit, and the reference irradiation light includes the first light receiving unit. In order to scan the reference irradiation light in the vertical direction, the light receiving state is scanned when one of the light receiving portions of the light receiving portion and the second light receiving portion is scanned. And a display unit that displays a direction in which the detector main body should be moved based on an output signal output from the detection means, and the display unit is disposed on the main body. In the reference irradiation light detection device of the present invention, the distance between the light receiving parts storing the distance between the first light receiving part and the second light receiving part and the distance storing means between the light receiving parts are stored. and it has the first light receiving portion and the information on the distance between the second light receiving portion, the first based on a light receiving unit and the output signal output of the second light receiving portion, the inclination state of the reference beam detector Is provided on both sides or one side of the main body, and is output from the tilt calculating means. And two or one index that is moved so as to coincide with the scanning position of the reference irradiation light based on the output signal.
[0006]
With this configuration, the inclination of the reference irradiation light detection device can be detected by the two light receiving units, the result can be displayed on the display unit, and / or the inclination can be warned by sound . Therefore, the efficiency of the operation for detecting the reference irradiation light can be increased, and the possibility of an operation error occurring can be reduced .
[0007]
Moreover, in the reference | standard irradiation light detection apparatus of this invention, it is preferable that an inclination information output means has a warning means which generate | occur | produces a warning signal. With this configuration, the inclination of the reference irradiation light detection device can be warned by sound.
[0008]
With this configuration, the inclination of the reference irradiation light detection device can be automatically corrected.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 2, as the reference irradiation light, for example, a laser device 102 that is a light source for setting a reference horizontal plane by rotating a horizontal laser beam LB around a predetermined vertical axis is installed. The reference irradiation light detection device 104 is disposed on, for example, a wall (not shown) in a region where the laser beam LB reaches. LL indicates an irradiation line of the laser beam LB on the wall, and DL indicates a reference line to be set at a position shifted from the irradiation line LL by a predetermined amount. As shown in FIG. 1, the reference irradiation light detection device 104 includes a first light receiving unit 112 and a second light receiving unit 114 arranged perpendicular to the direction in which the laser beam LB is detected, and a shift of the detected laser beam LB with respect to the reference position. And a display portion 118 indicating a direction . The display unit 118 is configured by, for example, a liquid crystal panel or an LED.
[0010]
The first light receiving unit 112 and the second light receiving unit 114 are configured by, for example, a CCD, and each include a plurality of light receiving portions arranged in the vertical direction. When the laser beam LB from the laser device scans the middle of one of the light receiving portions, for example, the light receiving portions of the first light receiving portion 112, the reference position is displayed, and the reference position display portion 124 of the display portion 118 is displayed. When the laser beam LB scans the upper half of the first light receiving unit 112, the upward display portion 122 of the display unit 118 is displayed so that the main body 130 is moved upward and becomes the reference position. Similarly, when the laser beam LB scans the lower half of the first light receiving unit 112, the downward display portion 120 of the display unit 118 is displayed so as to move the main body 130 downward to the reference position. When the first light receiving unit 112 and the second light receiving unit 114 are formed by a position sensor such as a CCD or a special-shaped light receiving element, the reference position can be detected with higher accuracy. In this case, the scanning position of the laser beam LB with respect to the reference position of the light receiving unit is determined by determining the predetermined position of the light receiving unit as the reference position.
[0011]
As shown in FIG. 1, the reference irradiation light detection device 104 includes a power switch 150, a detection accuracy adjustment switch 152, a buzzer volume adjustment switch 154, and a buzzer 156.
The power switch 150, the detection accuracy adjustment switch 152, and the warning buzzer volume adjustment switch 154 are preferably constituted by membrane switches.
The power switch 150 is configured such that the power is turned on when pressed first, turned off when pressed next, and turned on again when pressed next.
The detection accuracy adjustment switch 152 is configured to be set to high detection accuracy when pressed first, set to low detection accuracy when pressed next, and set to high detection accuracy again when pressed next.
[0012]
The warning buzzer volume adjustment switch 154 is set to a high volume when pressed first, set to a medium volume when pressed next, set to a low volume when pressed next, and set to a high volume again when pressed further. It is configured as follows.
These switches may be composed of rubber switches or rotary switches.
An index 144 is provided on one side of the main body 130 at a position corresponding to the reference position display portion 124. Two indicators may be provided on both sides of the main body.
The reference irradiation light detection device 104 having the above-described configuration moves the main body 130 up and down on a wall (not shown) so that the laser beam LB matches the reference position (not shown) of the light receiving unit 112. . When the laser beam LB is above the reference position of the light receiving unit 112, an upward display 122 is displayed to instruct to move the main body 130 upward. When the laser beam LB is below the reference position of the light receiving unit 112, The downward display 120 is displayed to instruct to move the main body 130 downward. When the laser beam LB matches the reference position of the light receiving unit 112, the reference position display part 124 is displayed and the position adjustment of the main body 130 is completed. Is displayed. Subsequently, a ruled line is written on the wall using the index 144.
[0013]
Referring to FIG. 3, the laser apparatus 102 includes a light source unit 172 that emits laser light that is reference irradiation light, a light emission control circuit 174 that controls the operation of the light source unit 172, and a projector that converges the laser light to emit a light beam. An optical optical system 176 and a light beam rotating means for rotating the light beam of the laser beam, that is, a light beam rotating member 178 are provided. The laser light emitted from the light source unit 172 passes through the light projecting optical system 176 and is rotated by the light beam rotating member 178 toward the first light receiving unit 112 and the second light receiving unit 114 of the reference irradiation light detection device 104 as the laser light LB. And irradiated at a constant rotational speed.
The reference irradiation light detection device 104 includes a first light receiving unit 112 and a second light receiving unit 114 that receive the laser light LB, a light reception state detection circuit 210 that detects a state of the received laser light LB, and a detection result of the laser light LB. And a display unit 118 for displaying.
[0014]
The display unit 118 displays any of the reference position display part 124, the upward display part 122, or the downward display part 120 in accordance with the state of the received laser beam LB. The display unit 118 is preferably constituted by a liquid crystal panel or an LED.
The reference irradiation light detection device 104 further stores the distance between the light receiving parts storage circuit 240 for storing the distance between the first light receiving part 112 and the second light receiving part 114, and the distance storing circuit 240 between the light receiving parts. Using the information on the distance between the first light receiving unit 112 and the second light receiving unit 114, the inclination of the reference irradiation light detection device 104 is determined based on the light reception result signals output from the first light receiving unit 112 and the second light receiving unit 114. And an inclination calculating circuit 244 for calculating. The display unit 118 also constitutes an inclination information output unit that outputs information related to the inclination of the reference irradiation light detection device 104 based on the output signal output from the inclination calculation circuit 244.
[0015]
The reference irradiation light detection device 104 further includes a buzzer driving circuit 224 that outputs a signal for driving a buzzer based on an output signal output from the inclination calculation circuit 244, and a reference irradiation light based on an output signal output from the buzzer driving circuit 224. And a buzzer 156 constituting warning means for generating a warning signal related to the tilt of the detection device 104.
The reference irradiation light detection device 104 further includes an index driving circuit 250 that outputs a signal for moving the index based on the output signal output from the inclination calculation circuit 244, and an index 144 based on the output signal output from the index driving circuit 250. An index driving member 252 to be moved and an index 144 are provided.
Next, a specific configuration and operation of the reference irradiation light detection device of the present invention will be described.
Referring to FIG. 4, the reference irradiation light detection apparatus of the present invention stores a power source 304 such as a battery, a source vibration 306 such as a crystal oscillator, a first CCD 308 and a second CCD 310 that receive laser light, and a processing program. In addition, a ROM 312 that stores information related to the distance between the first CCD 308 and the second CCD 310, one or more switches 321 to 323 for controlling the operation of the reference irradiation light detection device, and a process stored in the ROM 312. A CPU 350 that performs a counting process, an arithmetic process, and a comparison process using data stored in the ROM 312 by operating a program, a buzzer 156 or a speaker 356 (356 is displayed in the figure) that issues a warning, And an LCD panel 360 for displaying calculation results and the like.
[0016]
The power source 304 is preferably a lithium battery or a silver battery. Instead of the LCD panel 360, a fluorescent tube, an LED, or the like may be used. The element that receives the laser light may be a PSD, or may be a sensor in which PDs are arranged vertically to detect a position where the reference irradiation light crosses. The switches 321 to 323 correspond to the power switch 150, the detection accuracy adjustment switch 152, and the warning buzzer volume adjustment switch 154, respectively. The reference irradiation light detection apparatus of the present invention further includes an actuator 372 that moves the index 140 based on a command from the CPU 350. The actuator 372 is preferably configured using a linear motor.
[0017]
In a configuration having two indexes, two actuators may be prepared, and the indexes may be moved independently by each actuator, or only one actuator may be used, and this actuator may be used. You may comprise so that two parameter | indexes may be moved simultaneously.
Next, the operation of the reference irradiation light detection device 104 of the present invention will be described.
The power switch 150 is turned on to bring the reference irradiation light detection device into an operating state.
The laser beam LB irradiated by the laser device 102 is adjusted so that the rotation speed is maintained constant and the beam diameter is also constant. It can be taken into account that the beam diameter has a divergence angle. The widths of the first light receiving unit 112 and the second light receiving unit 114 in the rotation direction of the laser beam LB are also determined.
[0018]
Referring to FIG. 5, when the central axis 104 y of the reference irradiation light detection device 104 has an inclination of θ with respect to the normal line LBN of the irradiation locus of the laser beam LB that is the reference irradiation light, the index 144 is derived from the laser light LB. It will shift.
In this case, let LT be the distance between the longitudinal center axis 112y of the first light receiving part 112 and the longitudinal center axis 114y of the second light receiving part 114. The distance between the irradiation locus of the laser beam LB and the longitudinal center 112C of the first light receiving unit 112 is ST1, and the distance between the irradiation locus of the laser beam LB and the longitudinal center 114C of the second light receiving unit 114 is ST1. Is ST2.
The distance LT is stored in the ROM 312. Further, the distances ST1 and ST2 can be calculated by the CPU 350 based on output signals output from the first CCD 380 configuring the first light receiving unit 112 and the second CCD 310 configuring the second light receiving unit 114.
[0019]
The tilt calculation circuit 244 built in the CPU 350 inputs the LT information stored in the ROM 312 and calculates the tilt of the reference irradiation light detection device 104 based on the output signal of the first CCD 380 and the output signal of the second CCD 310. To do.
This operation is
θ = arctan ((ST1 + ST2) / LT) (Expression 1)
Can be performed.
This (Equation 1) is also stored in the ROM 312.
The calculation result of the tilt can be displayed on the display unit 118. This display is preferably performed according to the direction or sign of the tilt and the tilt angle.
Next, the operation for correcting the position of the index will be described.
[0020]
When the distance from the longitudinal center axis 112y of the first light receiving unit 112 to the index 144 is LT1, the amount SC1 by which the index 144 is shifted upward from the laser beam LB is:
SC1 = LT1 × tan θ (Expression 1)
It is.
Further, when the distance from the longitudinal center axis 114y of the second light receiving unit 114 to the index 144 is LT2, the amount SC2 that the index 144 is displaced upward from the laser beam LB is:
SC2 = LT2 × tan θ (Expression 2)
It is.
The inclination calculation circuit 244 calculates the inclination θ of the reference irradiation light detection device 104 and calculates the shift amount SC1 or SC2 using the calculated inclination θ. The inclination value θ and the shift amount SC1 or SC2 can be displayed on the display unit 118.
[0021]
The index driving circuit 230 outputs an index driving signal for moving the index to the actuator 372 that is an index driving member. A calculation formula for calculating the amount of movement for operating these actuators 372 is stored in the ROM 310, and the above calculation is performed by the CPU 350.
As a result, the actuator 372 operates to move the index 144 upward by SC1 or SC2.
Further, the tilt correction calculation result of the reference irradiation light detection device 104 calculated by the tilt calculation circuit 222 is displayed on the display unit 118. For example, as shown in FIG. 6, the display content is displayed by indicating the direction in which the inclination of the reference irradiation light detection device 104 is eliminated by an arrow 118 </ b> R.
[0022]
The inclination correction calculation result of the reference irradiation light detection device 104 calculated by the inclination calculation circuit 222 is input to the buzzer driving circuit 224, and the buzzer driving circuit 224 outputs a buzzer driving signal corresponding to the inclination correction calculation result. A warning sound is generated by the buzzer 156. For example, the sound quality, frequency, volume, etc. of the warning sound are changed in accordance with the direction and amount of inclination of the reference irradiation light detection device 104. As a modified example, a voice synthesis circuit may be built in the CPU 350, and the direction and amount of inclination of the reference irradiation light detection device 104 may be instructed by voice using a speaker 356 instead of the buzzer 156.
Further, the display unit may be instructed so that the reference position of the light receiving element is shifted from the shift amount of SC1 and SC2, and the laser beam LB and the index coincide.
[0023]
Further, as shown in FIG. 7, the reference irradiation light LBS may have an inclination θ with respect to the horizontal line HZ. In this case, the first index 140 is shifted upward by SH1, and the second index 142 is shifted downward by SH2.
Therefore, as shown in FIG. 8, the reference irradiation light detection device 104 must be rotated and positioned so that the central axis 104y of the reference irradiation light detection device 104 is at an angle θ with respect to the vertical line VT.
In this case, the inclination of the reference irradiation light detection device 104 is calculated, and the display unit 118 displays the direction of the inclination with an arrow and displays the amount of the inclination with a number. The user rotates the reference irradiation light detection device 104 so that the value of this display becomes 0 and the direction arrow indicates both directions.
[0024]
When the reference irradiation light detection device 104 is used for such an application, the reference irradiation light detection device 104 is provided with a gradient mode setting switch 500, and when the reference irradiation light detection device 104 is set to the gradient mode, the reference irradiation is detected. It is preferable to display the inclination of the light detection device 104 or notify the presence or absence of the inclination of the reference irradiation light detection device 104 by the buzzer 156.
[0025]
【The invention's effect】
The present invention has the following effects.
(1) The inclination of the reference irradiation light detection device can be detected by the two light receiving units, and the result can be displayed on the display unit.
(2) The inclination of the reference irradiation light detection device can be detected by the two light receiving units, and the result can be warned by sound.
(3) The efficiency of work for detecting the reference irradiation light can be increased, and the possibility of work mistakes can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a reference irradiation light detection device of the present invention.
FIG. 2 is a schematic explanatory diagram showing a state in which the reference irradiation light detection apparatus of the present invention is incident with reference irradiation light emitted from a laser device.
FIG. 3 is a block diagram showing an embodiment of a laser device and a reference irradiation light detection device of the present invention.
FIG. 4 is a block diagram showing a specific configuration of the reference irradiation light detection apparatus of the present invention.
FIG. 5 is a front view showing an embodiment of the reference irradiation light detection apparatus of the present invention for explaining the principle of inclination detection.
FIG. 6 is a front view showing an embodiment of a reference irradiation light detection apparatus of the present invention for explaining a deviation of an index.
FIG. 7 is a front view showing an embodiment of a reference irradiation light detection device for explaining an index shift when the reference irradiation light is inclined.
FIG. 8 is a front view showing an embodiment of the reference irradiation light detection device in a state matched with the reference irradiation light when the reference irradiation light is tilted.
[Explanation of symbols]
102 Laser Device 104 Reference Irradiation Light Detection Device 112 First Light Receiving Unit 114 Second Light Receiving Unit 118 Display Unit 130 Main Body 120 Downward Display Portion 122 Upward Display Portion 124 Reference Position Display Portion 144 Index 150 Power Switch 152 Detection Accuracy Adjustment Switch 154 Buzzer Volume Adjustment switch 156 Buzzer 224 Buzzer driving circuit 240 Distance storage circuit 244 between light receiving portions Inclination calculation circuit 250 Index driving circuit 252 Index driving member 304 Power source 306 Source oscillation 308 First CCD
310 Second CCD
312 ROM
321-323 switch 350 CPU
356 Speaker 360 LCD panel

Claims (2)

A reference irradiation light detection device for detecting reference irradiation light emitted from a light source,
The body,
A first light receiving unit and a second light receiving unit that are provided at a distance from each other and arranged in the main body so as to be perpendicular to a direction in which the reference irradiation light is detected;
A light receiving state detecting means for detecting a light receiving state of the reference irradiation light based on an output signal output from at least one of the first light receiving unit and the second light receiving unit;
When the reference irradiation light scans one of the first light receiving unit and the second light receiving unit, the reference irradiation light scans a position that is the reference of the one light receiving unit in the vertical direction. In order to do so, it comprises a display unit for displaying the direction in which the detector main body should be moved based on the output signal output by the light receiving state detecting means, and the display unit is disposed on the main body,
Furthermore, a distance storage unit between the light receiving units that stores a distance between the first light receiving unit and the second light receiving unit;
Based on the distance information about the output signal output from the first light receiving portion and the second light receiving portion between said first light receiving portion for storing the second light receiving portion of the distance memory unit between the light receiving portion Tilt calculating means for calculating the tilt state of the reference irradiation light detection device;
Inclination information output means for outputting information on inclination based on an output signal output by the inclination calculation means ;
Two or one index that is provided on both sides or one side of the main body and that is moved so as to coincide with the scanning position of the reference irradiation light, based on an output signal output by the tilt calculation means;
Reference beam detecting apparatus comprising: a.   The reference irradiation light detection apparatus according to claim 1, wherein the inclination information output unit includes a warning unit that generates a warning signal.

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